I convert my Audio Control SA-3050A to add a Li-Ion battery pack using 18650 batteries complete with charging circuitry, and also convert it to use a 240V switch mode power supply instead of the original 120V transformer. Information to help was sent to me by Kim, one of my Subscribers and Patreon's, although the information was from a different revision of the unit it was still helpful to understand what Audio Control were doing with the design of the RTA, you can download the files Kim sent me here: https://defs.link/?u=aff385 Buy UNI-T UT210E: https://defs.link/?u=ea4edc 4 Cell 18650 Battery Pack: http://defs.link/?u=18f2da 18V Power Supply: http://defs.link/?u=f52dd9 UNI-T UT210E Review and Teardown Video: https://www.youtube.com/watch?v=s9D93svMg6k 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 Subscribe: https://defs.link/?u=ffa106 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 #TestEquipment #Review ... https://www.youtube.com/watch?v=9NTMOiYRZg8

USB Power Supply Failure Investigation - 2 Minute Tuesday I investigate the cause of a USB power supply fault. The USB micro power supply stopped putting out any power. *I really appreciate the donations and support I get from my Patreon Supporters and YouTube Members, donations really do help me to make content for the channel and buy broken test gear, this hobby gets expensive !:* https://defs.link/?u=fcb3a1 #TheDefpom #ElectronicsCreators #Failed #Repair #Electronics #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)* ▶ Aliexpress: https://defs.link/?u=551ec48 ▶ 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://defs.link/?u=6f6e5e 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 SDS1104X-E. SDS2102 (hacked to 340MHz): https://defs.link/?u=1ed0fe https://defs.link/?u=12d498 SDS2104 X Plus. SPL-1008. SDP1168X: https://defs.link/?u=1ed0fe https://defs.link/?u=12d498 SDL1020X-E: https://defs.link/?u=a0eccb Other Equipment ------ UNI-T UTi260B Thermal Imager: https://defs.link/?u=f3283d7 (use discount code: BG45411) 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 Pro'skit SS-331 Desoldering Station: https://youtu.be/o_OKRknuoCM 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 FY6800: https://defs.link/?u=8b98cd http://defs.link/?u=34d101 Eakins Microscope: https://defs.link/?u=b0278b https://defs.link/?u=262327 Mustool G600: https://defs.link/?u=b8bc26 https://defs.link/?u=33f0aa Uni-T UT210E: https://defs.link/?u=391ce3 https://defs.link/?u=ea4edc DER DE-5000: https://defs.link/?u=0d9160 https://defs.link/?u=12d498 MK-328: https://defs.link/?u=0d9160 https://defs.link/?u=739ee7 MESR-100: https://defs.link/?u=0d9160 https://defs.link/?u=009419 ESR Meter: https://defs.link/?u=0d9160 HOPI: https://defs.link/?u=7fab55 PeakMeter PM6252: https://defs.link/?u=59ef66 HS1010: https://defs.link/?u=10c699 ... https://www.youtube.com/watch?v=WEdQ-vNgQLA

I show how to enable the calibration menu on an Agilent / Keysight E3646A, this also works for the E3647A, E3648A and E3649A if it says SECURE when trying to enter calibration mode. The calibration menu is sometimes locked, if that is the case it states "SECURED" when trying to access the menu, I show you how to enter the default unlock code. If the code is not known then there is a way of resetting it, I have not shown how to do that in this video but if you want a video on that please request it in the comments. 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 Subscribe: https://defs.link/?u=ffa106 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 #TestEquipment #Review ========================================== 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://www.youtube.com/watch?v=BXdohalcWI8

Part 3 of my diagnostics and repair of this RF signal generator. See part 1 here: https://www.youtube.com/watch?v=0aMK52UX1AM See part 2 here: https://www.youtube.com/watch?v=taMHBtbcwog In this video I identify a faulty voltage supply for a 78L05 regulator, which I found to not be actually regulating due the dropout voltage. I also identify the cause of two faults, of PLL unlock at certain frequencies, and of 10KHz-40KHz not working, both of which are caused by a single IC. #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 FY6800: https://defs.link/?u=8b98cd http://defs.link/?u=34d101 Eakins Microscope: https://defs.link/?u=b0278b https://defs.link/?u=262327 Mustool G600: https://defs.link/?u=b8bc26 https://defs.link/?u=33f0aa Handheld Equipment ------ Uni-T UT210E: https://defs.link/?u=391ce3 https://defs.link/?u=ea4edc DER DE-5000: https://defs.link/ ... https://www.youtube.com/watch?v=xLsCIaBvo0o