50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

[Glitcher]

Just got a 50 inch Plasma Vizio. I don't really work with plasmas much since I don't know that much about them but I'll give this one a try.

Symptoms are: Turns on, Has sound but no picture, no flicker or light of any kind when powered on.

Said there was a loud pop noise, the screen was all gray and then nothing but the sound was still on.

I usually first suspect the Y sustain and Buffer boards everytime I get the "sound but no picture" on plasmas. I checked all the IC's on the y buffer boards and they don't seem to have any burn marks.

Anyone dealt with this model before? Will post pictures later!

[tw2005]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

Looking up this model on SJ, LG PDPX3 panel with those horrible IPMs on the sustain boards which generally fail. Big job and not exactly cheap either. pretty old panel nowadays.

[aaronwt6]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

Looking up this model on SJ, LG PDPX3 panel with those horrible IPMs on the sustain boards which generally fail. Big job and not exactly cheap either. pretty old panel nowadays.

After picking up a few older plasmas I've just about given up on them due to cost. Someone needs to basically give me one for it to even be worth while to look at. Its tough to justify spending much on one when you can pick up a brand new set this size for under $500.

[tom66]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

I don't touch LG IPM based plasmas with a ten foot pole, unless they're free. I will touch older NEC/Pioneer/Panasonic plasmas and some older Samsung/LG if they don't use hybrids.

[Glitcher]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

This one was given to me free so I took a chance on it. Don't really know much about plasmas though.

I can also borrow a friends scope if needed with this set. Not sure how to test out the sustain boards though with the scope.

[tom66]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

If you post a picture of the scope and the Y-sustain then I can guide you through setting it up. But usually with loud pop/no picture one of the fuses will obviously be blown or Vs will be shorted.

[kevinm34232]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

I had 3 LG Y-SUS with bad IPM, the hardest part is getting them out and I smoked one of the boards. The other 2 I managed to get it replaced. The IPM itself was close to $50. The working Y-SUS though will sell for a good amount, I think I got $120 for it.

[Glitcher]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

Heres the Y-sustain, I measured all the fuses on it and found one that was open and had no continuity.

[Glitcher]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

So just wondering, What are some methods to remove the two IPMs?

I've read some methods of cutting off the pins of the ipm and desoldering each pin, how would you cut off the pins?

[flocko]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

If you snap off the set screws ( i use small mole grips that have been ground down to fit in the heat sink) some times if the set screws are still high use a small burr in a dremmel to grind flush then using a 1/8 drill, drill out the rest of the screws with the heat sink off cut the legs with side cutters,then just desolder,when refitting use nuts and bolts to hold heat sink hope this help's

[Glitcher]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

Alright So I just removed both the IPMs. Took a good amount of prying...

Looking on the underside of the IPMs there doesn't seem to be any burn marks? it looks normal, is there usually a burnt mark on these IPMs when they go bad?

[capkid]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

After picking up a few older plasmas I've just about given up on them due to cost. Someone needs to basically give me one for it to even be worth while to look at. Its tough to justify spending much on one when you can pick up a brand new set this size for under $500.

I haven't bought a TV in awhile. I had a tough time selling a 5-year-old 50" Panasonic plasma with 1080p for $310, so I decided to stop buying TVs. Like you mentioned, unless I can get one for free, they're starting to not be worth my time and expense to fix and resell.

The 50" LGs with bad IPMs are really not worth it anymore, since it's recommended that all four IPMs be replaced to the tune of $40 each. Also, you could still end up with mal-discharge issues when you're finished repairing the Y-Sus and Z-Sus.

[Glitcher]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

Alright so I found two resistors R82 and R22 reading like 75k ohms... I desoldered them and they both instantly just broke in half.

I found the IPMs

http://www.ebay.com/itm/YPPD-J016E-R...item2c6fb15a1f

Mine is a YPPD-J016C
but the one on the link is a YPPD-J016E saying its compatible. Will it be ok?

[capkid]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

Alright so I found two resistors R82 and R22 reading like 75k ohms... I desoldered them and they both instantly just broke in half.

I found the IPMs

http://www.ebay.com/itm/YPPD-J016E-R...item2c6fb15a1f

Mine is a YPPD-J016C
but the one on the link is a YPPD-J016E saying its compatible. Will it be ok?

Yes, the YPPD-J016E IPM is fine, and the seller is great. I've bought many parts from that particular seller.

[Glitcher]

Re: 50" Vizio Plasma P50HDM Loud pop, Sound but no picture.

Decided to check out the Z-sustain, and found two bad smd resistors R91 and R9 so the IPM on the Z-sustain must is bad also...

Guess I'll be parting this one out.