I'm troubleshooting the YSUS from a 60PV250 which had a open fuse FS104.
I replaced the fuse and its open again so I started testing all the transistors and diodes on the heat sinks didn't find anything out of order there.
Tested all the diodes on the bottom of the board and found D417 which shows a voltage drop of 103 in both directions.
The marking on the diode is 83 and then 19 right below that. I can't seem to find any info in this diode. Anyone that can help with identifying this part I'd greatly appreciate it....
krygods
Badcaps Veteran
Last Activity: 01-06-2016, 05:23 PM
Joined: 12-30-2014
Location: Lakewood, Ca
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Re: PN60E550D1FXZA. Y-sus LJ92-01859A
The pad the lifted went to a 'No Connection' or 'NC' pin on the IC so it was not needed.... -
Re: Lg 60pz550
I found a Z Sus board on ebay that will arrive today.
Question: Is there any risk in just putting the Z Sus into the TV and testing to see if it works, or is it possible for something else with a problem in the TV to burn up the Z Sus?Last edited by krygods; 11-23-2015, 12:46 PM.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
Picked up the SC board today everything good Q661 test ok SC50 jumped with buffers unplugged no blink codes.
Picture quality is pretty damn good on this thing I'd say. Reds seem a little over saturated.
Waiting for a colorimeter to arrive in the mail, see what those are all about.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
That's funny. I do the same thing too. I have a Samsung PN64E8000 in the living and a complete TV with a cracked panel for parts if anything in the TV fails.
I got the one in the living room for $100, had a blown fuse on the PSU replaced it nothing else wrong.Last edited by krygods; 11-17-2015, 02:51 AM.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
Not a rebuilt board.
Here is the URL for the listing
[url]http://www.ebay.com/itm/172000223117?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT[/url]
Also grabbed these just to have them.
[url]http://www.ebay.com/itm/321917738431?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT[/url]Re: Panasonic TC-P46G25 10 Blink Cod...IDX%3AIT[/url]...Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
If that's the case I'll just bring my meter with me test it right there it the guy's shop when I pick it up....Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
Seems that I was just overthinking here. Thought I was supposed to test between VF-GND (Pin 9) and the VF-GND point where the screw was removed.
Also I removed the buffers and measured with them removed, they seem to test good. I edited my previous post with the new readings....Last edited by krygods; 11-17-2015, 01:56 AM.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
I just picked up a SC board from the same model TV on eBay for $120 and its local so I'm going to pick it up tomorrow.
As long as it tests good with the buffers disconnected and SC50 jumped then I should be able to use it for troubleshooting this board am I correct in thinking this?Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
I tested the buffers this time without using an alligator clip extension for the GND I get a reading now except for the VF-GND (PIN 9) I still can't get a reading just shows open no matter the polarity of the probes.
SC Board
5V_F 5.3M OHM
VSCN-F 218.3K OHM
Vfo 5.41M OHM
VF-GND I still can't get a reading with the probes in either direction
SD Board
5V_F 5.4M OHM
VSCN-F 218.4K OHM
Vfo 4.96M OHMLast edited by krygods; 11-17-2015, 01:40 AM.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
So far I have found these that are all S/C both directions.
D451
D673
D674
These are also both S/C
Q452
D482
These transistors the collector and emitter are S/C
Q402
Q403
IC773, Schmitt inverter(HA) - How is this tested? Can't find datasheet.Last edited by krygods; 11-16-2015, 10:23 PM.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
Thanks for the run down, I'm about three or four pages into the 15 page thread so I'll get through it in my free time and of course go over it a few more times before I attempt the first repair.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
So all the parts that you marked in the picture, is this all of the components that you recommend replacing or are there others? I'd much rather just buy all the components that you've had to replace in the past and replace them all regardless if they test good or bad.Last edited by krygods; 11-16-2015, 04:07 AM.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
Here's what I've found with the buffers
TPSU15 - 5.41M OHM
TPSU16 - 218.3K OHM
TPSU17 - OPEN
TPSU18 - OPEN
TPSD26 - OPEN
TPSD28 - 218K OHM
TPSD29 - 5.04M OHM
TPSU18 is supposed to be reference to GND? I don't understand why I don't get a resistance reading when I test TPSU18.
Troubleshooting guide also says the TPSU17 is supposed to measure around 5.7M OHM but I see nothing there either.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
I'm trying to find where in the trouble shooting it explains how to test the sd/su.
All I see is how to isolate them to determine if one or the other is bad, but am I wrong in assuming that the SC must be functional in order to isolate the sd/su to determine if one is bad?Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
I've glanced at it I'll go ahead and read through it now that I have a general idea of what the problem is.
Soldering is not a problem for me, I spent a few years soldering as a profession so not much trouble for me when it comes to soldering.
Are the components to repair the board readily available?
Can you post a link to the thread you mentioned?
By the way thanks for the help and insight.Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
Range of the meter is Mega Ohm.
You are right about Q661, shorted across all three pins. Resistance reading is 3 Ohm across all three.
So is the SC easily repairable? I see a few SC board available but expensive $175.
Also what must be done to check the sd/su. I'm assuming those are the upper and lower buffer connected to the SC?Leave a comment:
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Re: Panasonic TC-P46G25 10 Blink Code After Power On
Unplugged the six item you marked.
TV power on and off without the 10 blink code.
If the TV is left on long enough it will shut itself off and flash a 4 blink code.
Here is a picture of the resistance reading across the pins at SC2.
Should Q661 be removed for testing or can it be tested in circuit? What am I testing, GATE to SOURCE and GATE to DRAIN?...Leave a comment:
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Panasonic TC-P46G25 10 Blink Code After Power On
After power on the standby light blinks 10 times continuously.
My trouble shooting plasma TVs is very limited so I don't know what voltages are supposed to be present etc.
I've taken pics of the boards as the are in the TV and top and bottom of the PSU.
What would be the next step in troubleshooting the problem with this TV?... -
Re: service menu RCA RLDED3955A
There is no backlight option in the picture settings? I'm pretty sure this setting will achieve what you are looking for.Leave a comment:
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