Samsung Plasma TV - Worth Repairing?

[electronicsurplus]

Re: Samsung Plasma TV - Worth Repairing?

OK, in that case. test the buffers to see whether they are shorted or not
In some cases the power supply will also click if it is under heavy load such as by Burned Y-Buffers or Y-Sustain


This link shows you how to test the buffers

http://blog.coppelltvrepair.com/2010...er-boards.html

You can also try removing either the top or bottom and turn the set on, IF one of the buffers are bad you will have 1/2 screen either top or bottom depending on which , or both, are bad

Jon

[infringer]

Re: Samsung Plasma TV - Worth Repairing?

Oddly I have had this happen to me with a CHE MEI panel and it was none of the above I didn't find the problem till I went further into the panel and seen that the backlights were arcing off on the frame the real bummer is by the time I had found and had lights ordered the screen got busted cause something was set on top of it so I had good backlights and a busted screen.

But either way it was very interesting I would not turn it on anymore you may risk blowing something more due to the arcing if this is the case.

Anyhow take care and good luck with this one.

[electronicsurplus]

Re: Samsung Plasma TV - Worth Repairing?

That is exchange price

[electronicsurplus]

Re: Samsung Plasma TV - Worth Repairing?

$29.00 + shipping

[zukdj]

Re: Samsung Plasma TV - Worth Repairing?

Actually just got off thye phone with Preher-Tech, if I send the board to them they can fix it for $65. Just need to know what you want for yours.

[zukdj]

Re: Samsung Plasma TV - Worth Repairing?

Jon, how much for the rebuilt power supply? Is it cheaper if I mail you back the old one to rebuild and keep for yourself as a spare to sell or to rebuild for me? My TV is an HPT5064 with no video but excellent sound, it was clicking on and off early on but that stopped and there is still sound but no video. The weird thing is if I use the RCA inputs for a DVD to produce sound and pull the (yellow) video-in cable from the TV the sound stops, I thought red and white were audio and yellow was video only - WTF? If you are sure its the power supply I'll purchase it if reasonable, the TV is only 3+ years old, the logic board is already new and all the heat sinks on the power supply, X & Y heat up evenly, LED light is on on the Y-SUS. Is there anything specifically I can look for to be sure?

[electronicsurplus]

Re: Samsung Plasma TV - Worth Repairing?

I have bought this kit @ http://www.preher-tech.com/electronicsrepairkits and, they all worked very well

Even has a manual and instruxctions as to where they are and which to change

[electronicsurplus]

Re: Samsung Plasma TV - Worth Repairing?

also, In fact, I am working on 2 of the same exact televisions as we speak.


I have the entire Power Supply available, also, if needed

Jon
Electronic Surplus Recyclers

[electronicsurplus]

Re: Samsung Plasma TV - Worth Repairing?

Your problem is in the Power Supply. If the set is clicking

have repaired these 100 times already. It is a common problem

you will need to get:

HPT4254 Deluxe PSU Repair Kit



Contents:
1 8A 250V Time Delay/Slow Blow 5mm X 20mm fuse
2 FQPF9N50CF MOSFETs
2 FDA18N50 MOSFETs(substitutes for 2 FQA13N50CF)
4 20 ohm 0.25W SMD/MELF resistors
2 10k ohm 0.25W SMD/MELF resistors
2 1SS184T5LFT SMD dual common cathode ultra fast recovery diodes
2 2200uF 25V capacitors(replaces CX813 and CX814)
1 1gram tube of heat sink compound

to repair that television.

You can just change the caps but, it will ONLY last a few days. The diodes go bad and, the resistors lose value, which in turn will kill the new caps if you install them only

There are kits available specifically for this television. I am not sure if it is available on this site, but, I think it might be

Jon

Electronic Surplus

[Mr Bill]

Re: Samsung Plasma TV - Worth Repairing?

So the y-sus is different between the samsung and your philips? My 50PFP5332D/37 has a green led on the y-sus.

[zukdj]

Re: Samsung Plasma TV - Worth Repairing?

The Samsung has an LED light on on the Y-SUS, not the Philips.

[Mr Bill]

Re: Samsung Plasma TV - Worth Repairing?

According to shop jimmy.com one of the x-mains are interchangable so i some might but to confirm you'll have to verify the board numbers on both. Is the philips you want to use as a parts tv have a broken panel?

This was pulled from a philps pdp manual concerning the led light on the y main:
If the LED is ON then you have a problem with the Panel,
Y- Buffers or Y-Main Board. Starting at the panel connections
unplug them and then Y-Buffers one at a time (while unplugging
& plugging the AC cord). Each time confirm if the LED stays ON
after unplugging the connectors from the Panel to the Y-Buffers.

[zukdj]

Re: Samsung Plasma TV - Worth Repairing?

Hey, any update on the 50" Samsung HPT5064? I have the same issue, sound but no video and I'd like to fix it. What is the best test? I see a green light on the Y board, if I remove the fuse the light goes off. Are parts in the Philips 50PFP5332D/37 interchangeable? I have one of those I could use for parts. I'd really like to get this TV working for my basement.

[tripps09]

Re: Samsung Plasma TV - Worth Repairing?

I changed the capacitor last night, and nothing changed as far as the video went. The blue capacitor in the picture has a negative sign on one side, while my replacement cap had a giant 0 on the side. I'm guessing the side with the 0 on it is the negative side?

I'll try replacing that picofuse tonight, as well as testing the resistor. What values should I be reading on my multimeter?

Also, is there a way to test the cap to make sure I installed it properly and that it has a good connection with the solder?

[start2011]

Re: Samsung Plasma TV - Worth Repairing?

Here is a picture of the capacitor. It is right next to the power cable pin for the y-sustain.



Side view showing the profile:

Change that cap (680UF @ 25V) and picofuse , it should be 1A. also check resister next to red capaciptor.

[tripps09]

Re: Samsung Plasma TV - Worth Repairing?

25V. 680 uF

[tom66]

Re: Samsung Plasma TV - Worth Repairing?

What are the values on that cap?

[tripps09]

Re: Samsung Plasma TV - Worth Repairing?

Here is a picture of the capacitor. It is right next to the power cable pin for the y-sustain.



Side view showing the profile:

[tom66]

Re: Samsung Plasma TV - Worth Repairing?

Can you post a picture of the suspect capacitor?

Your symptoms do not match the typical bad sustain problem.

[tripps09]

Re: Samsung Plasma TV - Worth Repairing?

I'm very happy I searched and stumbled upon this thread!

I have a similar TV but in a 50" (Samsung plasma) and the sound works but video doesn't.

Troubleshooting steps I've done:

Unplugged top buffer board. No video, audio works.

Unplugged the bottom board. Still no video, audio works.

Unplugged z-sustain board, turned TV on. I could hear the audio.

Unplugged Y-sustain board, turned TV on. I could still hear the audio.

On the y-sustain board, closest to the power cable, there is a capacitor with the top bubbling up and a black dot on top.

After the TV is on for ~20 minutes, I turned it off and after 5 minutes I felt the heat sinks.
Both heat sinks on the z-sustain board are hot.
The 2 larger heat sinks on the y-sustain board are cold, while the smaller one near the bottom is hot.

From what it seems, the entire y-sustain board is bad. Are there any other steps I should take to diag the problem? TIA.