12V Power Supply Repair

Comments · 813

• AM

  @amtpdb1 · 8 years ago

  I wish you would have shown how to test all the components that you said you tested and they were good. Thanks for the video.

  18

• EA

  @eamonns3030 · 8 days ago

  Thanks John, a good investigative tutorial. Your upload is much appreciated.

• PE

  @perjensen2347 · 5 years ago

  Very fine video showing all what is required from carefully opening the small box to examining the internal circutry, finding the faulty component and performing the repair and finishing the repair job.All done with very fine images and good explanatiations during the work.

  13

• GA

  @gassanali8667 · 6 years ago

  close-up camera view during inspection is extremely helpful

  3

• PA

  @paulfitzgerald4933 · 4 years ago

  This was so much fun to watch and discover these problems with you. &nbsp; I&apos;ve had devices that came back to life once the shorts had been resolved just from cleaning the PC board. &nbsp; &nbsp;It also looked like R10 had been rusted at the bottom, but that&apos;s great you found it as a cap that was messed up. &nbsp; &nbsp; Great video, 5 years old and one of the best. <br><br>Few people have a camera set up to allow the viewer to inspect components visually with the tech.

  6

• RI

  @richardbrobeck2384 · 6 years ago

  Hello John well that was the electrolytic fluid that had leaked out the cap causing issues with the circuit board

  11

• MA

  @mauinka123 · 5 years ago

  Hi John, you put on a better understanding correcting the subject matter thank you

• VA

  @vandal968 · 6 years ago

  Those are normally sonically welded (as you discovered). &nbsp;If you <b>think</b> that there&apos;s a screw lurking under a label, it&apos;s better to just give it a couple of pokes with an x-acto, awl or similar to &quot;break thru&quot; the label. &nbsp;This way, if there aren&apos;t any screws you haven&apos;t destroyed the label for no good reason. &nbsp;I prefer an x-acto for this job because if you do discover a screw hole, it&apos;s easy to make a clean round slice around the screw hole for screwdriver access.

  6

• AT

  @AThreeDogNight · 8 years ago

  This is the first video as to where I can at least see all of the parts for myself. Thank you for that info as well on what you used. Now if many, many other u-tubers would follow with your example then they would probably grow to millions of fan based customers wanting to learn electronics. Good video all in all as well.

  1

• I-

  @i-will-get-you-there · 10 years ago

  Lovely Video. <br>Thanks for all the trouble shooting steps you have taken to arrive at which component was at fault!<br><br>Cheers

  4

• RO

  @rogerd4559 · 7 years ago

  It was sitting on the shelf since 2009 and the seller wanted to clear out the old stock before moving the new fresh merchandice. Electrolytic Capacitors are like batteries, they have an electrolite and is usually an acid and when they leak its in the form of a vapor and they corrode many other componants and the lands of the device as well as dry up and become useless. In addition to replacing that cap, Mr Ward should thoroughly scrub that whole board down with alcohol or flux remover to prevent future failure from the electrolite deposits obviously sprayed all over!

  3

• WA

  @waltschannel7465 · 5 years ago

  Well done sir! You inspired me to do better next time I get a phone call like that, recognizing there&apos;s another person that needs help on the other end of that call.