Telefunken Opus 2114 stereo tube radio restoration - Part 3. Biasing the power tubes.
Telefunken Opus 2114 stereo tube radio restoration log part 3. This radio has one push-pull stage for the main center speakers, and two separate single-ended stages for the side 'stereo' speakers. The bias on these is rather bad, so this is the first step in getting this radio onto a safe level.
Only $5 for 10 PCBs and every new member get $5 bonus. + Express 24 hour service on https://www.pcbway.com/
The boards arrived, so it's build time, and this experience shows how stupid mistakes are always on the lookout for careless designers :)
The testing is done with the latest restoration, the Telefunken Gavotte 55. Wow. We have a winner here!
Have fun, and stay safe.
You can now support the channel:
https://www.patreon.com/mcaldeira
https://paypal.me/macaldeira
#tuberadios #antiqueradio #radiorestoration
______HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM_____
DIY TEST GEAR: The title says it all:
https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL
RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
HowTo's: Various videos on some simple techniques and projects:
https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616:
https://www.youtube.com/watch?v=fwmW9k3TwNE&list=PLy5M_tA9ux7L5sAApLzV6xoYzmRNJpMW5
SABA FREIBURG W2:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7IqvS-LshUGpE1D_WY6mrZe
GRAETZ MUSICA 4R417:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7Ios98E59dWjwc2SRJyxwIn
You may also be interested in ...
CAPACITOR LEAKAGE TESTER:
https://www.youtube.com/watch?v=0pySErvzUIY&list=PLy5M_tA9ux7KWexvEjLB0SANSxQXi0zTS
...
https://www.youtube.com/watch?v=FvS7gxUzMqk
Removing a board on one of these vintage transistor radios is always a little risky, particularly when there are loads of wires connecting it to the rest of the radio. The audio and power board on this Grundig Satellit 650 Pro was particularly difficult. In fact, if you needed to replace some components on here, you just could not do it without de-soldering dozens of wires, as most of the components are otherwise inaccessible.
Regardless, restorers can't be choosers, so if it must be done ... it has to be done. Let's pray for a miracle or two!
Enjoy the video.
You can now support the channel:
https://www.patreon.com/mcaldeira
https://paypal.me/macaldeira
Music Credits: Down With Your Getup - Mini Vandals (YouTube Studio Audio Library)
#tuberadios #antiqueradio #radiorestoration
______HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM_____
DIY TEST GEAR: The title says it all:
https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL
RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
HowTo's: Various videos on some simple techniques and projects:
https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616:
https://www.youtube.com/watch?v=fwmW9k3TwNE&list=PLy5M_tA9ux7L5sAApLzV6xoYzmRNJpMW5
SABA FREIBURG W2:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7IqvS-LshUGpE1D_WY6mrZe
GRAETZ MUSICA 4R417:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7Ios98E59dWjwc2SRJyxwIn
You may also be interested in ...
CAPACITOR LEAKAGE TESTER:
https://www.youtube.com/watch?v=0pySErvzUIY&list=PLy5M_tA9ux7KWexvEjLB0SANSxQXi0zTS
...
https://www.youtube.com/watch?v=stlBB7AL3Bs
Blaupunkt Arkansas stereo tube radio restoration - Part 4
The tuning capacitor is removed and repaired, to re-establish function, and hopefully get the AM bands working.
Will they?
Watch and see for yourself.
Full info on this radio at:
http://www.radiomuseum-bocket.de/wiki/index.php/Blaupunkt_Arkansas_43400
You can see the playlist for this series restoration at:
https://www.youtube.com/watch?v=8TuEln5S7rU&list=PLy5M_tA9ux7L9lBDhGrk6wDHWJT2-eFKt
See a series of 'Restoration Building Blocks' videos on detailed steps in the restoration process:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616:
https://www.youtube.com/watch?v=fwmW9k3TwNE&list=PLy5M_tA9ux7L5sAApLzV6xoYzmRNJpMW5
SABA FREIBURG W2:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7IqvS-LshUGpE1D_WY6mrZe
GRAETZ MUSICA 4R417:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7Ios98E59dWjwc2SRJyxwIn
You may also be interested in ...
CAPACITOR LEAKAGE TESTER:
https://www.youtube.com/watch?v=0pySErvzUIY&list=PLy5M_tA9ux7KWexvEjLB0SANSxQXi0zTS
...
https://www.youtube.com/watch?v=qXS3ezSnjsY
Loewe-Opta is one of the tube radio brands from the 50s that I really like. It uses the very common German set of tubes, and also the same (or similar) design principals that you'll find on many of these brands from the same era. Restoring one of these is something I would normally do, but this particular radio, a Truxa 1701W, had something else that I just could not resist: the ugliest paint job I have ever seen! I just had to save it.
A radio as good as this one deserves to be better presented, so I just couldn't resist the challenge.
Hope you enjoy the series.
You can now support the channel:
https://www.patreon.com/mcaldeira
https://paypal.me/macaldeira
Other channels mentioned in this video:
@DavidTipton101
#tuberadios #antiqueradio #radiorestoration
______HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM_____
DIY TEST GEAR: The title says it all:
https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL
RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
HowTo's: Various videos on some simple techniques and projects:
https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616:
https://www.youtube.com/watch?v=fwmW9k3TwNE&list=PLy5M_tA9ux7L5sAApLzV6xoYzmRNJpMW5
SABA FREIBURG W2:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7IqvS-LshUGpE1D_WY6mrZe
GRAETZ MUSICA 4R417:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7Ios98E59dWjwc2SRJyxwIn
You may also be interested in ...
CAPACITOR LEAKAGE TESTER:
https://www.youtube.com/watch?v=0pySErvzUIY&list=PLy5M_tA9ux7KWexvEjLB0SANSxQXi0zTS
...
https://www.youtube.com/watch?v=AxvOYke3Kv8
The Stereo Decoder board was next in line, so that gets done. Not a big problem.
However ...
The next obvious candidate is the"the board" that was hacked and cracked, so I did the obvious thing: I avoided it, and went back further to the AM front-end section. The testing shows promise, but I've got quite a way to go.
Enjoy the trip.
You can now support the channel:
https://www.patreon.com/mcaldeira https://paypal.me/macaldeira
#tuberadios #antiqueradio #radiorestoration
Full info on this model at:
https://www.radiomuseum.org/r/braun_regie_450s_cev450scev_450.html
_____________________________________________________________
DIY TEST GEAR: The title says it all:
https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL
RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
HowTo's: Various videos on some simple techniques and projects:
https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616:
https://www.youtube.com/watch?v=fwmW9k3TwNE&list=PLy5M_tA9ux7L5sAApLzV6xoYzmRNJpMW5
SABA FREIBURG W2:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7IqvS-LshUGpE1D_WY6mrZe
GRAETZ MUSICA 4R417:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7Ios98E59dWjwc2SRJyxwIn
You may also be interested in ...
CAPACITOR LEAKAGE TESTER:
https://www.you
...
https://www.youtube.com/watch?v=ytTjNVGaZqc
I've had numerous viewers ask me about the software I use to mark off schematics as I check them. I posted a video to answer precisely that question, and you can see it here:
Recently, some viewers have also asked me about the method I use to 'simplify' complex schematics in order to better understand the various parts of the radio. I use a drawing program - there are many available - that must have the 'layers' function, and permit painting on it, as this is the core of this method.
In this video, I aim to show you an example of this.
Hope this helps you.
You can now support the channel:
https://www.patreon.com/mcaldeira
https://paypal.me/macaldeira
______HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM_____
DIY TEST GEAR: The title says it all:
https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL
RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
HowTo's: Various videos on some simple techniques and projects:
https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616:
https://www.youtube.com/watch?v=fwmW9k3TwNE&list=PLy5M_tA9ux7L5sAApLzV6xoYzmRNJpMW5
SABA FREIBURG W2:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7IqvS-LshUGpE1D_WY6mrZe
GRAETZ MUSICA 4R417:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7Ios98E59dWjwc2SRJyxwIn
You may also be interested in ...
CAPACITOR LEAKAGE TESTER:
https://www.youtube.com/watch?v=0pySErvzUIY&list=PLy5M_tA9ux7KWexvEjLB0SANSxQXi0zTS
#tuberadios #radiorestoration
...
https://www.youtube.com/watch?v=mTepB3AIxA8
The FM on Telefunken Opus tube radios is amazing when it works as it was designed to do. When there is a problem, however, finding it can be challenging. If you need to actually open up the FM front end, you may well be opening up a can or worms.
When the 'fault' is something that you yourself imagine, that becomes another issue. Just as time-consuming to solve, but more self-discrimination than technical skill is needed.
Enjoy my pain, and avoid yours.
You can now support the channel:
https://www.patreon.com/mcaldeira
https://paypal.me/macaldeira
TimeStamps
00:00 FM made me feel stupid ... but I won! Telefunken Opus 8 restoration pt. 4
00:10 Intro.
01:19 Changing discriminator capacitor.
04:44 The checking that was done.
07:33 Testing FM. We have a problem.
11:42 The moment of enlightenment.
12:43 What did I do?
17:43 IF alignment of the FM.
28:58 Testing after alignment.
29:54 Replacement of magic eye tube.
30:27 Conclusion.
______HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM_____
DIY TEST GEAR: The title says it all:
https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL
RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
HowTo's: Various videos on some simple techniques and projects:
https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616
...
https://www.youtube.com/watch?v=OwGeGvtuAew
Philips BX626 tube radio restoration - Part 7.
The finale is here. We do a reception test and have a look at the final result of the restoration.
Great feeling.
Full info on this radio at:
https://www.radiomuseum.org/r/philips_bx626z.html?language_id=2
You can see the playlist for this series restoration at:
https://www.youtube.com/watch?v=ivqt5OBex_I&list=PLy5M_tA9ux7K813k81En1mGSyDvS6wQT-
See a series of 'Restoration Building Blocks' videos on detailed steps in the restoration process:
https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf
See also playlists on some other completed restoration projects.
PHILIPS BX750A:
https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF
TELEFUNKEN OPUS 2114:
https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu
SABA UW-175-Z 3D:
https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p
GRUNDIG 1070:
https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI
SCHAUB-LORENZ GOLDY 58 type 3020:
https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ
BUSH VHF64:
https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X
GRUNDIG 3060A:
https://www.youtube.com/watch?v=7x2sK2GSYeE&list=PLy5M_tA9ux7L8e9h8lrHGREPqcgWO-YQm
TELEFUNKEN OPERETTE 8:
https://www.youtube.com/watch?v=5IsACM0mPzs&list=PLy5M_tA9ux7K3SXDv8Hu4uAyl1O7NE5dc
GRAETZ SUPER 171W:
https://www.youtube.com/watch?v=MhG-CH0gqm4&list=PLy5M_tA9ux7IjUykGE8neJSI6GUxMl2YG
LOEWE-OPTA MAGNET 3737W:
https://www.youtube.com/watch?v=ZSZBJ5sKQm8&list=PLy5M_tA9ux7J_hzDhnF8rs2c7wmgGfRlK
BRAUN ATELIER 3:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7L3k5nPRvrk1aH764QRCTqE
LOEWE-OPTA TRUXA STEREO 4741W:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7KhVk0KqPx0Wkh2KO_5f2fQ
GRAETZ COMEDIA 616:
https://www.youtube.com/watch?v=fwmW9k3TwNE&list=PLy5M_tA9ux7L5sAApLzV6xoYzmRNJpMW5
SABA FREIBURG W2:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7IqvS-LshUGpE1D_WY6mrZe
GRAETZ MUSICA 4R417:
https://www.youtube.com/playlist?list=PLy5M_tA9ux7Ios98E59dWjwc2SRJyxwIn
You may also be interested in ...
CAPACITOR LEAKAGE TESTER:
https://www.youtube.com/watch?v=0pySErvzUIY&list=PLy5M_tA9ux7KWexvEjLB0SANSxQXi0zTS
...
https://www.youtube.com/watch?v=w_9ejIf82Tk