Sony KV-36HS420 TV Repair

I have the same thing happening to my tv. Its the same model I think it blinks 7 times, not 4. Turns itself off but still makes noises. I want it repaired but like you said its heavy. Its the power supply what was the chip called? It looks really hard to do it my self like to put it back to gether....

That's a good point. Which is why I installed IC sockets for the chips to facilitate easy replacement if necessary. And you could stick a small strip of flat copper on each chip.

Would it help to add some IC heat sinks to those two ICs to prevent or at least delay future failure?

Thanks for the comment. If your set has been off for a while there should be no voltage on the anode lead. Take a screwdriver and pry the rubber cap up and carefully push on the spring clip while holding the anode lead. It will pop right out. Then touch the bare spring clip to chassis to bleed off any voltage. Even if shocked its not lethal, but a bit annoying. Good luck
Hal.

Hello Sir. I also liked your vidoe. I'm working on a simular Sony 27" TV now. The parts I'm interested in are what you skiped on your video, mainly discharging and removing the anode cap from the tube and the CW board from the beam gun. Can you point me in the right direction as to removing those. Thanks.

Nice Job! Glad you saved this TV from the Landfill! It looks like a nice set, too bad Sony had a weak point in the design.

It's hard to believe that there was not one bad electrolytic capacitor!

Thanks for making a fun video. I am glad I'm not the only electronics nutcase out there.

thanks for adding that info!

Well to further answer your questions, at first I noticed the blinking LED. Then I removed the back for a visual inspection. Made notes of the circuit board id#'s for ref. Used a Fluke DVM to check for obvious component defects. Finding none I then searched the web for more info. The ckt board removal was intuitive. Just make note of all connectors and dont force anything apart!

Thanks for commenting. It wasn't meant to be all that instructional. There are other videos on the web that cover this set and many repair forums that point you in the right direction when fixing a TV like this Sony. I have an extensive electronics background which made it a little easier in this case.

Thanks for commenting. The Sony has a diagnostic led that blinks a code relating to the defective area. After searching web repair forums I discovered a common problem related to the two IC chips I replaced. I didn't intend for the video to be all that instructional. Only to provide an over view of this TV and the incoragement for others to fix their own stuff.

Hey how you doing galvestonsailor,

I like to fix many electronics stuf,
But i am not that good fixing those TVs.

So i was about to ask the same question 28019ab
is asking you about. Yeah, how did you test the
two burning chips and how did you know that was
the problem to fix that issue on your television?

Keep it up with your educational videos and also
Thanks for sharing this videos with all of us :-)

Some useful stuff here, but it might also have been good to see
-Diagnosis process: As it stands, it sort of comes out of the blue. how did you trace the fault to those two ICs - did you test the horizontal and line drive stages first?
-chassis ref. would be good to know, as other models probably use the same guts.
-footage of the disassembly and repair in progress, and a note of how long it took, this would help on a practical level.
anyway, I mean this as constructive criticism! good luck.