HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

[tom66]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

You can also use a service like "Coppell TV repair" on eBay who will replace your IPMs for $130.
http://www.ebay.com/itm/Sustain-6871...item255d4e1b2d

[capkid]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

You can also use a service like "Coppell TV repair" on eBay who will replace your IPMs for $130.
http://www.ebay.com/itm/Sustain-6871...item255d4e1b2d

I'd set a limit in my head of $100, but that's certainly a quick and less dirty option. Coppell does good work.

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

Hmmm...

I purchased a YSUS and YDRVBT board and installed them today.

Unfortunately, it didn't solve the all problems.

Now I have bright blue sparkling pixels all over the screen, with this white vertical stripe that moves to different positions left to right every so often.

Ya think I got a bad YDRV board?

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

Hmmm...

I disconnected the ydrv bottom, and I get the same display as above, only the bottom half is black. Also the ohms of the FETs on the new board match the upper y-drv board.

Ldmme guess? I got sold a bad ysus board?

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

I disconnected just the top YDRV and i get the same screen with top blacked out.

[tom66]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

Did you read near zero on some of the FETs?

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

no, infinite one way, 2.4megohm the other way

[tom66]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

On all FETs? What about across the two large pad connections going to the Y-sus?

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

ya, thats where im measuring....do u have skype? lol

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

oh wait, the upper drv board ohms are low today, 88.3ohms and 77.6. bad FET on upper?

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

maybe i can rob a good FET from my old lower board and replace a bad one on the upper?

[capkid]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

You can take a fet from your old lower, but you need to test them first, obviously. If you're not sure how to test a mosfet, here are a couple different methods:

https://www.badcaps.net/forum/showpo...52&postcount=7

https://www.badcaps.net/forum/showpo...5&postcount=17

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

yeah, top most FET on upper is bad

[tom66]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

That'll do it.

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

yay, that did it!!!! its fixed!

[tom66]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

But you have one less FET on one board? You should replace that to make sure it doesn't fail again.

[capkid]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

I've never seen both the upper and lower boards fail with bad fets. Noted. Nice job on the fix.

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

a few red sparkles all over the screen tho...hrmn

[tom66]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

This is a common issue with this panel, capkid has a repair service (firmware update) I believe...

[ngc1068]

Re: HP 50" Plasma TV, Model: CPTOH-0603... plz, need help troubleshooting

But you have one less FET on one board? You should replace that to make sure it doesn't fail again.

No, i had ordered a complete new bottom board, so I had my old one. I robbed one good FET from it and replaced the one bad one on the top board.