Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

[tvtimmy]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Glad to hear you had success!

[sevciu]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

To close my story, after replacing everything listed in previous post with genuine spares from reputable source, I had the board repaired and working OK. However the TV ran into 8 Blinks error code. Eventually I fixed that as well, and the TV is working just fine in my patio as outdoor TV.

[sevciu]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Hi Guys, I'm trying to repair the same board.
At first inspection it had one blown (exploded) diode (D422 - RFE10BM3S) and 3 transistors in short (Q421, 422 and 433 - 30F125).
The closest match for diode I found was RFN 10BM 3S, and replaced both D421 and D422. Note "RFN" instead of "RFE", not sure this makes a difference. These diodes I got from a reputable online AU supplier, I trust they are genuine.
For transistors, I could only find the exact part (30F125) on ebay, from China. These arrived last night (after 3 weeks).
Got quite excited and installed them straight away. Excitement was short lived, my first board repair failed with a faint buzz. Absolutely disappointing. No bang, no sparks, not even a thread of smoke .
A quick tally after second failure is pretty discouraging:
- Q421, 422 and 433 - 30F125 are in short again
- Q621 - 45F128 short (only one, 2 of the 3 are good)
- Q661 - RJP63G4 short
- Q402, 403, 404 - RJP30Y2A and D401 - RFUH20 appear to be in short, but I have not yet separated them. Some may be OK.
The 2 diodes I replaced appear to have survived.

I didn't even know I can get fake components on ebay, ex China. Thanks for sharing this. After reading your posts, I strongly suspect (80%) the 30F125 I got from ebay, were fake.

I would need a bit of guidance on what equivalents I could use in place of 30F125? I cannot find them with original name anywhere online, for Australia (RS-Components, Element14 ...).
I have not yet searched for the components failed last night, I may need to come back for advice on equivalents for those as well.
Also, the other help I need is: What else will I need to replace together with these transistors? I understand there are some small IC and SMD transistors, resistors which usually fail together?

Cheers, Sevciu

[tvtimmy]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

If you order them from ebay, make sure you check them in diode mode before installing them. I bought 200 GT30j124 igbt's that thankfully were real and not fake Chinese crap that I use as substitutes for most igbt's. I have been burned by buying fake transistors from all over the world before. PM me if you want to get a few from me.

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

what i need to know is what is stamped on the front of the transistors, under the screw hole. Here are 2 examples.

q402 - rjp30y2a
q403 - rjp30y2a
q404 - rjp30y2a
q421-423 - 30f125

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

In post #18 you said

In post #21 You said

Can you clarify this?

I've attached a photo with the FETs, diodes and capacitors marked by color.

Orange - FETs/transistors
Red - Diodes
Blue - Capacitors

For all of the Orange ones (FETS/transistors):
1. Set your meter on continuity mode (e.g. it beeps when you have your two leads touching each other).
2. For each component, there are silk screen markings "G" "E" and "C".
3. measure with the meter all the possible combinations:

G - E
G - C
C - E

4. Note down which combinations are shorted, and for which component.

For all of the red ones (Diodes):
1. Set your meter on continuity mode (e.g. it beeps when you have your two leads touching each other).
2. For each component, there are silk screen markings "A" "A" and "K". (two anodes, one cathode, it's a dual diode package)
3. Measure the possible combinations to see if there are any dead shorts across the diode(s)

"A" (left side) to "K"
"A" (right side) to "K"

4. Note down which combinations are shorted, and for which component.

For all of the blue ones (Capacitors):
1. Set your meter on continuity mode (e.g. it beeps when you have your two leads touching each other).
2. For each component, put the meter leads - one on each pin and see if they continuously beep. If so, there is a short there (or caused by other components that share common pads.
3. Note each component that continuously deeps.



It may help if you take the SC board image and mark it up in mspaint

My bad, I thought by shortened you meant without nubs on the bottom sticking out.

Q402 - All combinations beep
Q403 - All combinations beep
Q404 - All combinations beep

Q421-423 - All combinations beep

D401 - A to K both left and right side beep
D423 - A to K both left and right side beep

C411, C412, C413, C416, and C417 beep

[tvtimmy]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

What I need to know is what is stamped on the front of the transistors, under the screw hole. Here are 2 examples.

[ngth82]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

For Q402-404 the shortened one is D402 and Q401. For Q421-423 there is no shortened one.

In post #18 you said

"Q421-423, Q402-404 Those were the only ones beeping as far as I could tell. I am not sure how to do the second part you described."

In post #21 You said

"For Q402-404 the shortened one is D402 and Q401. For Q421-423 there is no shortened one."

Can you clarify this?

I've attached a photo with the FETs, diodes and capacitors marked by color.

Orange - FETs/transistors
Red - Diodes
Blue - Capacitors

For all of the Orange ones (FETS/transistors):
1. Set your meter on continuity mode (e.g. it beeps when you have your two leads touching each other).
2. For each component, there are silk screen markings "G" "E" and "C".
3. measure with the meter all the possible combinations:

G - E
G - C
C - E

4. Note down which combinations are shorted, and for which component.

For all of the red ones (Diodes):
1. Set your meter on continuity mode (e.g. it beeps when you have your two leads touching each other).
2. For each component, there are silk screen markings "A" "A" and "K". (two anodes, one cathode, it's a dual diode package)
3. Measure the possible combinations to see if there are any dead shorts across the diode(s)

"A" (left side) to "K"
"A" (right side) to "K"

4. Note down which combinations are shorted, and for which component.

For all of the blue ones (Capacitors):
1. Set your meter on continuity mode (e.g. it beeps when you have your two leads touching each other).
2. For each component, put the meter leads - one on each pin and see if they continuously beep. If so, there is a short there (or caused by other components that share common pads.
3. Note each component that continuously deeps.



It may help if you take the SC board image and mark it up in mspaint

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

I would go with a replacement IF you can find a "match" and has a "return policy" that is favorable because a lot of "used boards" on the market has "misleading specs" (ie. "good working", "tested / working") where they are just salvaged as is and the seller is just pushing them out.

As you indicate, you may then end up with potentially two boards, working and non-working, which could be useful in the future. Further, if you go with a replacement board, before installing, you can do some "strategic measurements" (ie. resistance checks) and comparing the two to see which components on the "bad" board are maybe in trouble for future "effort" maybe.

I found this one.

https://www.ebay.com/itm/TXNSS1UDUUT...QAAOSwtutcGHAF

30 day return shipping window but I pay return shipping.

Looks like it would work for my TV since its for the same TV model. I think my TV was manufactured in October 2013 instead of September.

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

What is stamped on the shorted transistors? Something like DG302?

For Q402-404 the shortened one is D402 and Q401. For Q421-423 there is no shortened one.

[budwich]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

I would go with a replacement IF you can find a "match" and has a "return policy" that is favorable because a lot of "used boards" on the market has "misleading specs" (ie. "good working", "tested / working") where they are just salvaged as is and the seller is just pushing them out.

As you indicate, you may then end up with potentially two boards, working and non-working, which could be useful in the future. Further, if you go with a replacement board, before installing, you can do some "strategic measurements" (ie. resistance checks) and comparing the two to see which components on the "bad" board are maybe in trouble for future "effort" maybe.

[tvtimmy]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

What is stamped on the shorted transistors? Something like DG302?

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Remove the sc board and flip it over. Check every component that has 3 legs and is attached to a heatsink with a screw. Test in beep mode, all combinations of the 3 legs on the parts labeled with a Q. Some of the ones labeled with a D may beep, but that is because a "Q" part in its circuit is bad. Remove each "Q" part and check those to pins on the sc until the short goes away.

Q421-423, Q402-404 Those were the only ones beeping as far as I could tell. I am not sure how to do the second part you described.

I gotta ask, what do you think the estimated cost will be to repair this board myself? Assuming I can even figure out how to do so. Because ebay has a working board for $45 and if repairing myself is going to cost 20-30 I wouldn't have a problem spending the extra not to have to go through the effort of self repair. Especially if it gets my TV up and running much sooner. At least then I could still self repair the board but have a working TV then have another board in case it died again.

Any thoughts on the screws?

I am also concerned that this will happen again if I do repair the SC board. I made a post on AVSForum before being referred here and one guy there replaced his SC board which worked but then apparently the same thing happened again because there was something wrong with the SU/SD.

[tvtimmy]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Remove the sc board and flip it over. Check every component that has 3 legs and is attached to a heatsink with a screw. Test in beep mode, all combinations of the 3 legs on the parts labeled with a Q. Some of the ones labeled with a D may beep, but that is because a "Q" part in its circuit is bad. Remove each "Q" part and check those to pins on the sc until the short goes away.

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Your sc board has loose screws. They caused the shorting of a few IGBT'S. You can find the bad ones, or just buy a SC board from ebay for about $50. You should replace the 7 mounting screws with ones with lock washers on them. If you go to the hardware store and get them, make sure they aren't to long, because they will touch, and break the glass screen.( I have done it once myself). Best to buy them from Shopjimmy. Com or ebay. Your tv should be good as new for years to come.

Thank you for the help and advice!

If I were to try the repair myself what would that entail? My friends father is a former electrical/defibrillator engineer and worked for Heartstream, HP, and Phillips so I could probably have him help me and I assume he probably has the tools.

Any chance you can link me to the screws? I can't find them on ebay or shop jimmy. (any chance loctite on the current screws would work?)

I found this https://www.ebay.com/itm/Panasonic-T...IAAOSw9N1VoAFB

but it is expensive for just screws and I am not sure if those are the right ones.

[tvtimmy]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Your sc board has loose screws. They caused the shorting of a few IGBT'S. You can find the bad ones, or just buy a SC board from ebay for about $50. You should replace the 7 mounting screws with ones with lock washers on them. If you go to the hardware store and get them, make sure they aren't to long, because they will touch, and break the glass screen.( I have done it once myself). Best to buy them from Shopjimmy. Com or ebay. Your tv should be good as new for years to come.

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Just put one probe on one pin and the other probe on the other pin. Your testing if that line is shorted together. Don't ground to anything.

Using the continuity check setting on my multi-meter and doing this I get a displayed reading of 000 and the thing beeps for longer than 4 seconds.

[tvtimmy]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Just put one probe on one pin and the other probe on the other pin. Your testing if that line is shorted together. Don't ground to anything.

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Ideally I would like to first determine which board is the problem. I am having trouble doing so even when following the service manual.

Once the proper board is identified then I would probably just send it in somewhere to be fixed or buy a replacement.

Alternatively I could look for a local repair shop and see about getting it fixed. I called one and they quoted $185 to repair one board which seems high. Would rather avoid this if I can actually determine which board is at fault and replace the board or send it out for repair.

[jennkel]

Re: Panasonic TC-P60ST60 Plasma TV 7 Blink Codes Help

Unplug this connector and check for a short. Put a probe on each pin circled in red. If you get a beep longer than 4 seconds there is a short on the sc board. Remove the board and check all the transistors that are labeled with a Q(Q421,422....). Remove them from the board until the shorts go away. Replace as necessary.

So I check the connector pins for a short? What do I ground the multi meter too in this case?

Unfortunately I don't think I have the knowledge or tools to replace transistors.