Philips 50PFP5332D/37 TOUGH DOG as they use to say

[ReeceyBurger123]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Ohh yeah and you got nothing, so the Psu is at fault. I presume you had the mb totally disconnected ?

[Truncatedhose]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Ohh yeah and you got nothing, so the Psu is at fault. I presume you had the mb totally disconnected ?

Yes, totally removed from the set.

[tikito]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Look at the two isf104, d8028 and d8031

[Truncatedhose]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Look at the two isf104, d8028 and d8031

Hmm..D8031 is shorted, tested in and out of circuit. D8028 seems to check like a good diode. What do you think? D8031 shouldn't read shorted, right? Sure bet to replace the power supply board?

[dick_barton]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Why not replace the diode since you've found a fault and continue fault finding if necessary it that doesn't resolve the problem.

[Truncatedhose]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Why not replace the diode since you've found a fault and continue fault finding if necessary it that doesn't resolve the problem.

Well, I could I suppose, but I doubt that single diode is the only problem. Don't you think the odds are that more parts are bad or the diode would just short again? I figure if I can replace the board for $90.00 and it cost me $12.00 for the diode (part plus shipping), then might as well replace the whole board...? Otherwise, I might end up at $90.00 plus $12.00 and then there's all the time to consider. Time is money, ya know.

[ReeceyBurger123]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Might be best to replace it tbh if your not that confident in it. Also theres two types of Psu for this set a green pcb one and a yellow pcb one the yellow on is more reliable but you will need to recap it before use.

[tikito]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

For me knowledge and understanding about how things work is very important,i dig a lot on this board few months ago and only found this diode as a problem,however every case could be different.
At this point is your decision,good luck and inform us about final result.

[Truncatedhose]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

I just got a power supply and replaced it. The set works now. Thanks for all the input and help!

[ReeceyBurger123]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

Good work

[Round2thrift]

Re: Philips 50PFP5332D/37 TOUGH DOG as they use to say

I've been trying to figure out this 50" plasma for a couple of weeks. This one is stumping me because I've not seen this symptom and this TV doesn't have puffed caps like I usually see with this model.

Upon plug in, it attempts to power up, relay clicks a couple times, seems to go into shutdown, the led on the front doesn't light up. There is an LED on the power supply board (location: LED8001) that blinks green 10 times. According to the chart printed above that, it says: PROT. UVP: 8V6 VSND_POS, VSND_NEG. I don't know what this means. I've downloaded the chassis EJ3.0U PA service manual from Elektrotanya, but can't find reference to this LED or error code. Maybe someone else can? I tried to get a training manual linked in another thread on badcapsforum, but it wasn't available any longer.

Things I've tried/things I know:

---I found a thread talking about running test patterns off the logic by placing jumpers on it to see if the logic or main is causing a problem, but the result was it still shutdown with 10 blinks on the power supply board. I tried replacing the logic anyway and same symptom. I put the original logic back in.

---It has 5 volts standby

---I don't think it tries to develop VS or VA, but I can retest if anyone wants an exact report on what it does, but it didn't seem to even nudge my Fluke during it's power up attempt.

---I think I had tried unplugging the Y-SUS and Z-SUS to see if it would come out of shutdown, but I don't remember if that changed anything; I don't think it did.

---I can't find any bad fuses on the power supply, Y-SUS or Z-SUS


Any ideas out there? I usually am able to figure these out, but I'm stuck on this one.

Thanks so much!

I will post 8 pics of the TV and boards.

Had this same problem with light on y sustain. i end up with a bad upper buffer