Remember to subscribe !
See part 1 here: https://www.youtube.com/watch?v=KQ1upk3S0XI
See part 2 here: https://www.youtube.com/watch?v=6APe0lCv0XM
See part 3 here: https://www.youtube.com/watch?v=hpyqYre3AUY
See part 4 here: https://www.youtube.com/watch?v=33mNvXhEMQs
See part 5 here: https://www.youtube.com/watch?v=wQrwCp4apRg
See part 6 here: https://www.youtube.com/watch?v=Vo_nKeTrDmY
See part 7 here: https://www.youtube.com/watch?v=62fox1Bg7-0
See part 8 here: https://www.youtube.com/watch?v=PaJuVsO-ixU
See part 9 here: https://www.youtube.com/watch?v=DjtW_IfhClk
See part 10 here: https://www.youtube.com/watch?v=d_pDXyedUTc
See part 11 here: https://www.youtube.com/watch?v=vAUkYAKKF3A
Give this a Thumbs Up if you like it, it helps to grow the channel, also please share the video with your friends to help the channel to grow !
If you feel like donating some money to help fund my purchase of items for the channel please use one of the methods below, cheers !
PayPal Donations: payments_to@thedefpom.com
Patreon: https://www.patreon.com/TheDefpom #ifixstuff #thedefpom #electronicsrepair
TheDefpom Merchandise: https://teespring.com/stores/thedefpom
==========================================
Some Of My Electronics Tools (video and purchase links)
==========================================
Boonton
------
4220.
8210: https://defs.link/?u=e1eddc
Fluke
------
8842A:
45: https://defs.link/?u=eac51d
343A: https://defs.link/?u=13c93d
5200A: https://defs.link/?u=a43c99
540B: https://defs.link/?u=0c6bd9
893A.
A90.
HP/Agilent/Keysight
------
4261A: https://defs.link/?u=07ed95
5005A.
5342A 18GHz: https://defs.link/?u=5f7513
6181B: https://defs.link/?u=b12aef
8012B: https://defs.link/?u=ca5764
8648B: https://defs.link/?u=da52a3
8901B: https://defs.link/?u=535835
DSOX1102G: https://defs.link/?u=a68d39 https://defs.link/?u=12d498
E3646A: https://defs.link/?u=128f4a
Marconi
------
2022D.
2955.
TF2103: https://defs.link/?u=61baaa
Rohde & Schwarz
------
SMY: https://defs.link/?u=93514b
CMU200: https://defs.link/?u=8ccd72
Polarad SPN: https://defs.link/?u=2ead82
Siglent
------
SDM3065X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SDS2102 (hacked to 340MHz): https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SPL-1008.
SDP1168X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SDL1020X-E: https://defs.link/?u=a0eccb
Other Equipment
------
KSGER T12 Soldering Iron: https://defs.link/?u=620ace http://defs.link/?u=5c112e
Quick 861DW: https://defs.link/?u=138c0f https://defs.link/?u=a3fc81
S-993A: https://defs.link/?u=079677 https://defs.link/?u=e855a0
EEVBlog BM235: https://defs.link/?u=12d498
YR1030 Battery ESR: https://defs.link/?u=c56527
Heathkit IT-12 Signal Tracer.
Racal Dana 1992: https://defs.link/?u=8eeeba
Bird 43: https://defs
...
https://www.youtube.com/watch?v=vAUkYAKKF3A
Part 1 of the repair on a Mid 2012 13" MacBook Pro A1278 with 820-3115 logic board, this is a liquid MacBook Pro.
It has several faults, no green light on the charger, and it won't boot from USB.
I fix the problem with no light on the charger and get it to turn on and into OS X.
I use flux to remove the worst corrosion from the board, and clean it in my ultrasonic cleaner before continuing with the diagnosis of the faults, measuring voltages and testing parts of the circuitry to find why it is dead.
I replace several parts to fix the more obvious issues.
It still has more problems that need fixing, the USB3 ports are not working properly, and the thunderbolt port won't work either, I will be doing that in Part 2, so make sure you subscribe and click the bell icon so you don't miss the rest of the repair.
Subscribe and click the Bell Icon to get notifications so you don't miss out on my future videos.
Thumbs Up and Share the video with your friends so they get to see the videos too!
Affiliate links: (Bookmark and buy using them)
Banggood: https://defs.link/?u=5d46ae
Amazon Store: https://www.amazon.com/shop/thedefpomsrepairchannel
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Test Equipment Repair Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE21HOatpZqBT7XPDF-xVgYp
Electronics & Repair Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3HC6pRLVhotWsQbshtmLcw
Review & Teardown Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3BQ0oNHtWTPQ-0QslbrgEb
Mailbag / Postbag Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE1ba-zQlmWqBLqhZPDR6wFj
Electronics Project Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3scjKfNCTPedENrGu2zViF
Apple Repair Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE1vu2Hh_8Mg5NhVSWzbPWFD
CB & HAM Radio Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3ki74hMMitH9aRlLa9ZgZx
TheDefpom Merchandise: https://teespring.com/stores/TheDefpom
Donate so I can make more videos for you, see links below, cheers:
Become a Patreon! https://defs.link/?u=fcb3a1
PayPal Donations: https://defs.link/?u=b099ee
My 3D printed replacement test equipment parts on Thingiverse: https://defs.link/?u=0347b1
My website (well, one of them): https://www.TheDefpom.com
My Twitter: https://www.twitter.com/TheDefpom
I upload new videos at the same time each morning (NZ Time) at least 3 times a week, on Monday, Wednesday and Friday at a minimum, if possible I will also do a Live Stream on a Sunday morning, so watch out for those too.
#TheDefpom
#IFixStuff
#Electronics
#Repair
#Defpom
#consumerelectronics
#macbookrepair
#louisrossmann
#computerrepair
...
https://www.youtube.com/watch?v=-L87WDahVG4
HP 400E AC Voltmeter Testing
I open up a HP 400E that I acquired recently, check that it looks OK, clean the switches, and test its functionality and accuracy.
Patreon Supporters: https://defs.link/?u=fcb3a1
#TheDefpom
#ElectronicsCreators
#HP
#Repair
#Electronics
#TestEquipment
#HewlettPackard
#Defpom
▶ Subscribe: https://defs.link/?u=ffa106
Click the Bell Icon to get notifications about my future videos!
*** Affiliate links: (Bookmark and buy using them) ***
▶ Banggood: https://defs.link/?u=5d46ae
▶ Amazon Store: https://www.amazon.com/shop/thedefpomsrepairchannel
▶ ???☕ Merchandise: https://teespring.com/stores/TheDefpom
Donate so I can make more videos for you:
▶ Become a Patreon!: https://defs.link/?u=fcb3a1
▶ Become a YouTube Member: https://www.youtube.com/channel/UCllpBTH26_dAl5tYl7vA1TQ/join
▶ PayPal Donations: https://defs.link/?u=b099ee
▶ My Odysee channel: https://odysee.com/@TheDefpom:fa
▶ My Bitchute channel: https://www.bitchute.com/channel/TheDefpom/
▶ My Utreon channel: https://utreon.com/c/TheDefpom
▶ Test Equipment Repair Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE21HOatpZqBT7XPDF-xVgYp
▶ Electronics & Repair Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3HC6pRLVhotWsQbshtmLcw
▶ Review & Teardown Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3BQ0oNHtWTPQ-0QslbrgEb
▶ Mailbag / Postbag Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE1ba-zQlmWqBLqhZPDR6wFj
▶ Electronics Projects Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3scjKfNCTPedENrGu2zViF
▶ Apple Repair Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE1vu2Hh_8Mg5NhVSWzbPWFD
▶ CB & HAM Radio Videos: https://www.youtube.com/playlist?list=PL2z3V9RkHQE3ki74hMMitH9aRlLa9ZgZx
▶ My website: https://www.TheDefpom.com
▶ My Twitter: https://www.twitter.com/TheDefpom
▶ My Thingiverse for 3D printed replacement test equipment parts: https://defs.link/?u=0347b1
====================
My Electronics Tools (video and purchase links)
====================
Boonton
------
4220.
8210: https://defs.link/?u=e1eddc
Datron
------
1062: https://defs.link/?u=4423e96
4700: https://defs.link/?u=e976205
Fluke
------
8842A:
45: https://defs.link/?u=eac51d
343A: https://defs.link/?u=13c93d
540B: https://defs.link/?u=0c6bd9
5200A: https://defs.link/?u=a43c99
5450A: https://defs.link/?u=3c6292
HP/Agilent/Keysight
------
3457A.
4261A: https://defs.link/?u=07ed95
5342A 18GHz: https://defs.link/?u=5f7513
6181B: https://defs.link/?u=b12aef
8012B: https://defs.link/?u=ca5764
8648B: https://defs.link/?u=da52a3
8901B: https://defs.link/?u=535835
DSOX1102G: https://defs.link/?u=a68d39 https://defs.link/?u=12d498
E3646A: https://defs.link/?u=128f4a
Marconi
------
2022D.
2955: https://def
...
https://www.youtube.com/watch?v=n-m2luy_z1A
Remember to subscribe and click the Bell Icon to get notifications!
I repair the power supply of this multifunction Karaoke amp, guitar amp, music player, tuner, PA speaker unit.
It uses a integrated audio amplifier and switch mode power supply unit, and a seperate control deck and tuner module.
Affiliate links: (buy from them using my links below)
Banggood: https://defs.link/?u=5d46ae
Give this a Thumbs Up if you like it share the video with your friends, it helps to grow the channel.
To help support the channel please use one of the methods below, cheers !
PayPal Donations: https://defs.link/?u=b099ee
Become a Patreon! https://defs.link/?u=fcb3a1
Test equipment appeal: https://www.youtube.com/watch?v=cDFThnxqDWU
My test equipment replacement part designs on Thingiverse: https://defs.link/?u=0347b1 #ifixstuff #thedefpom #electronicsrepair
TheDefpom Merchandise: https://teespring.com/stores/thedefpom
==========================================
Some Of My Electronics Tools (video and purchase links)
==========================================
Boonton
------
4220.
8210: https://defs.link/?u=e1eddc
Fluke
------
8842A:
45: https://defs.link/?u=eac51d
343A: https://defs.link/?u=13c93d
5200A: https://defs.link/?u=a43c99
540B: https://defs.link/?u=0c6bd9
893A.
A90.
HP/Agilent/Keysight
------
4261A: https://defs.link/?u=07ed95
5005A.
5342A 18GHz: https://defs.link/?u=5f7513
6181B: https://defs.link/?u=b12aef
8012B: https://defs.link/?u=ca5764
8648B: https://defs.link/?u=da52a3
8901B: https://defs.link/?u=535835
DSOX1102G: https://defs.link/?u=a68d39 https://defs.link/?u=12d498
E3646A: https://defs.link/?u=128f4a
Marconi
------
2022D.
2955.
TF2103: https://defs.link/?u=61baaa
Rohde & Schwarz
------
SMY: https://defs.link/?u=93514b
CMU200: https://defs.link/?u=8ccd72
Polarad SPN: https://defs.link/?u=2ead82
Siglent
------
SDM3065X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SDS2102 (hacked to 340MHz): https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SPL-1008.
SDP1168X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SDL1020X-E: https://defs.link/?u=a0eccb
Other Equipment
------
KSGER T12 Soldering Iron: https://defs.link/?u=620ace http://defs.link/?u=5c112e
Quick 861DW: https://defs.link/?u=138c0f https://defs.link/?u=a3fc81
S-993A: https://defs.link/?u=079677 https://defs.link/?u=e855a0
EEVBlog BM235: https://defs.link/?u=12d498
YR1030 Battery ESR: https://defs.link/?u=c56527
Heathkit IT-12 Signal Tracer.
Racal Dana 1992: https://defs.link/?u=8eeeba
Bird 43: https://defs.link/?u=4b18f7
Sinadder 3: https://defs.link/?u=2bf1dd
Audio Control SA-3050A RTA: https://defs.link/?u=a04df2
Korad KA3305D: https://defs.link/?u=69090a
PDVS2mini: https://defs.link/?u=869ba4
Valhalla 2703: https://defs.link/?u=06bcfc
Feeltech
...
https://www.youtube.com/watch?v=_Jrs9iV7rtg
Remember to subscribe !
Give this a Thumbs Up if you like it, it helps to grow the channel.
This follows on from my experiments with a Cobra 148GTL which I purchased as a Parts or Repair radio from eBay, it worked OK, it just had channel mods etc.
See the Cobra 148GTL video here: https://www.youtube.com/watch?v=9oxYlUlhi60
The radio had pin 10 tied to the Fin pin through a switch to give it the +128 channels, so I decided to investigate this modification and try to understand why it works, and also clear up why there are various versions of this modification which all work, just in different ways.
I have known about the ti-state of pin 10 for many years, but it was not something I had really played around with, until now.
If you have better knowledge about how the PLL mod works, (or even a data sheet on the device !) please add a comment or get in touch.
Please help to support me so I can continue making more repair videos:
PayPal Donations: payments_to@thedefpom.com
Patreon: https://www.patreon.com/TheDefpom #ifixstuff #thedefpom #electronicsrepair
TheDefpom Merchandise: https://teespring.com/stores/thedefpom
==========================================
Some Of My Electronics Tools (video and purchase links)
==========================================
Boonton
------
4220.
8210: https://defs.link/?u=e1eddc
Fluke
------
8842A:
45: https://defs.link/?u=eac51d
343A: https://defs.link/?u=13c93d
5200A: https://defs.link/?u=a43c99
540B: https://defs.link/?u=0c6bd9
893A.
A90.
HP/Agilent/Keysight
------
4261A: https://defs.link/?u=07ed95
5005A.
5342A 18GHz: https://defs.link/?u=5f7513
6181B: https://defs.link/?u=b12aef
8012B: https://defs.link/?u=ca5764
8648B: https://defs.link/?u=da52a3
8901B: https://defs.link/?u=535835
DSOX1102G: https://defs.link/?u=a68d39 https://defs.link/?u=12d498
E3646A: https://defs.link/?u=128f4a
Marconi
------
2022D.
2955.
TF2103: https://defs.link/?u=61baaa
Rohde & Schwarz
------
SMY: https://defs.link/?u=93514b
CMU200: https://defs.link/?u=8ccd72
Polarad SPN: https://defs.link/?u=2ead82
Siglent
------
SDM3065X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SDS2102 (hacked to 340MHz): https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SPL-1008.
SDP1168X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498
SDL1020X-E: https://defs.link/?u=a0eccb
Other Equipment
------
KSGER T12 Soldering Iron: https://defs.link/?u=620ace http://defs.link/?u=5c112e
Quick 861DW: https://defs.link/?u=138c0f https://defs.link/?u=a3fc81
S-993A: https://defs.link/?u=079677 https://defs.link/?u=e855a0
EEVBlog BM235: https://defs.link/?u=12d498
YR1030 Battery ESR: https://defs.link/?u=c56527
Heathkit IT-12 Signal Tracer.
Racal Dana 1992: https://defs.link/?u=8eeeba
Bird 43: https://defs.link/?u=4b18f7
Sinadder 3: ht
...
https://www.youtube.com/watch?v=HZRoJC0szx4
I catch the magic smoke escaping from a HP 8647A RF Signal Generator.
Watch the entire repair video here: https://youtu.be/c2dgI7duA7w
This is an old video, but thought it was good enough to add as a short... this is what I fix !
#defpom
#releasethesmoke
#magicsmoke
#electronicscreators
...
https://www.youtube.com/watch?v=FaHn6XXOSLg