Re: Eeprom dump thread!
LG 60PB6600 Bin
IC100
24C256
NZ version...
BigPete
Senior Member
Last Activity: 12-13-2023, 11:26 AM
Joined: 07-14-2012
Location: Waikato
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Last edited by BigPete; 04-07-2023, 10:36 PM. -
Re: Samsung BN44-00516A no 5v Stby
Ok. I'll check that out. Thanks.Leave a comment:
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Re: Samsung BN44-00516A no 5v Stby
Thank you for that R J.
NT801S was open.
I've now replaced it and the TV is back up and running.
Thank you again.
Cheers.
Pete.Leave a comment:
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Re: Samsung BN44-00516A no 5v Stby
There's no ICX801. There's no error code. There's no power going to the main board to drive an error code.
Is ICX801 the same as US801? It's in the same vicinity as CS825 and QS804. US801 is a 8pin IC.Leave a comment:
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Samsung BN44-00516A no 5v Stby
So I've done a lot of searching trying to figure this one out. I've replaced the usual faulty components on this board.
I've repaired a few of these boards already but never had this issue.
There's no 5v Stby or PS_ON voltage.
There's no voltage at ICP801.
I figure the standby circuit comes from the rectified circuit supplied through the resisters and diodes. Then goes to some Zener diodes and transistors to diode DM832, where the voltage output stops.
From there the circuit goes down to the optocouplers.
I swapped ICP801 and a few other bits and pieces with...Last edited by BigPete; 07-29-2022, 10:42 PM. -
Re: Milwaukee M12 M18 charger repair
They were older models going by the dust in them.
They regularly come up on the local buy and sell sites. All the ones I've repaired have had the U1 chip fail, except for one, which was a faulty plug, and I ended up replacing the U1 IC first thinking it was that.
It could be a similar issue similar to the C4 cap in Yamaha amps.
On these two chargers, the cap was out of spec and the resistor open. I replaced the Diode just to be safe.
It'll be just another thing to check.Last edited by BigPete; 10-27-2021, 12:33 PM.Leave a comment:
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Milwaukee M12 M18 charger repair
Thought to post up a repair I recently did on two of these chargers.
After replacing U1, TOP256EN, which seems to be a common failure and one I've done multiple times, these two ICs blew again, not instantly, but upon removing and reinserting the battery.
What I found was the snubber circuit had failed.
So after replacing U1 again, along with a resistor, polyester cap and a diode, all was well.
The parts and locations:
Replaced U1 - TOP256EN
Replaced D2 - 600V 1A Diode
Replaced C5 - 630V 4.7nF Polyester Cap
Replaced R12 - 68khm 2W resistor
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Re: Panasonic TC-P50X5 no power no red light
Just in case this helps someone, I bought a TH-P42X50 with the same issue. Swapped out U203 with a NCP1271B, as that's what I could get at the time, but still didn't power up. Turns out D308 was shorted as well. It's a SS320 diode.Leave a comment:
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Re: LG 60 Plasma missing 15V Z-SUS
[url]https://www.badcaps.net/forum/showthread.php?t=69738[/url]Re: LG 60 Plasma missing 15V Z-SUS<b...?t=69738[/url]Last edited by BigPete; 12-25-2020, 04:07 AM.Leave a comment:
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Re: Need Help Repairing 60" Lg PN5700 Plasma tv
Picked up a 60PN6500 recently with the same issue.
There was only 4V on the 15V line.
Y-SUS board number: EAX64789501
Z-SUS board number: EAX64789601
I replaced the following components on the Y-SUS to get it back up and running:
D509 - K8A60DA - Shorted
D603 - ES1C - Shorted
R251 - 2.2 Ohm resistor - Open
I also soldered some possible dry joints. I didn't put them under a magnifying glass to confirm it, but felt it needed doing.Last edited by BigPete; 12-25-2020, 04:08 AM.Leave a comment:
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Re: Panasonic TX-P50UT30B 6 blink error
I never noticed it lighting during the multiple tests.
I only found it because I was testing the whole SOS6 circuit in diode test mode.
Looking back Tom did mention in one of the posts to see if it was lighting briefly, but I was focused on all the common faults that I didn't even think to check.Leave a comment:
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Re: Panasonic TX-P50UT30B 6 blink error
Just fixed this same model TV.
I thought I would post up what I found for other people.
TV had no blink code at all. Just a solid green light and no panel discharge.
The 30F131 transistrors on the SC board were shorted only.
Replaced them, now I get a 6 B blink error code.
Replaced both DG302 transistors and a hole heap of the small 5 and 8 pin ICs and transistors. Everything that came up in a search, still no go.
Turned out to be the green LED D583.Leave a comment:
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Re: Panasonic 12 blink repair on TH-P46S10
Hi,
Sounds similar to my problem only my TV wouldn't turn on what so ever.
With the TV trying to start, the outside pins were over 20v on Q355. The inside pin was low.
It's a P channel mosfet. Yours could be less leaky than mine was.
Be careful while testing it.Leave a comment:
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Panasonic 12 blink repair on TH-P46S10
Just thought I would post this repair here just in case someone may find it useful.
I picked up a TH-P46S10Z Panasonic Plasma TV with a 12 blink code.
There was only 1.6V on the 15V sound line going to the A Board. Even with the A Board disconnected there was 0V.
The A Board appeared to have no shorts on it.
I also had a spare power supply from the 42 inch version so could could confirm the A Board was fine.
The P Board, ETX2MM747, had no obvious shorts.
I measured the voltage on Q355, both the gate and source pins had 21V. The drain pin had 0V
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Re: Th-p50x50z, no picture, no screen glow, semi-fine SN board
I'm not sure if the voltage difference is because the panel is energized on one and not the other.
The other thing I noticed was that pin 5, the drain pin of IC16784 (MIP3910), has a fluctuating voltage on the working board of between 180 and 190V and the other board has a steady voltage of about 188V.Leave a comment:
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Re: Th-p50x50z, no picture, no screen glow, semi-fine SN board
I think I have figured out the issue but can't figure out why the problem exists.
The voltages between the two boards are the same when using TPVFG as the earth.
The problem is that there is a voltage difference between chassis earth and TPVFG.
Can someone read the service manual to point me in the right direction please?
TIALeave a comment:
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Re: Th-p50x50z, no picture, no screen glow, semi-fine SN board
Made some head way.
VAD on the working board with the missing buffer IC, the one that has a picture is 100V.
VAD on the working board that's intact but no picture is 35V.
I'll do some more investigating.Leave a comment:
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Re: Th-p50x50z, no picture, no screen glow, semi-fine SN board
Did some comparing between the boards and there seems to be an anomaly between the readings of Q16820 between the two boards.
I'll investigate further.Leave a comment:
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Th-p50x50z, no picture, no screen glow, semi-fine SN board
Hi,
I bought a TH-P50X50 Panasonic plasma TV which had sound but no picture and no error code and no screen glow. The SN board LED was lit green and was humming with no shorts and has the right voltages.
I thought it was a main board issue so I looked around and managed to pick up the same TV with a cracked screen for cheap, NZ$10.
I swapped out the main board, no difference.
Swapped out the PSS board, no difference.
The TV with the cracked screen had a SN board with a failed buffer IC due to the cracked screen, so i unsoldered it and installed it with the corresponding... -
Re: Panasonic Plasma TH-P46U20A - dead
Just thought I would add to this.
I had similar problems with a TH-P46U20Z.
Power supply board number is ETX2MM805MEH.
TV was completely dead, no 5v Standby.
No shorts or open fuses, nothing.
Swapped in a similar power supply and the TV fired up.
Replaced IC501 with a MIP3E40MY. No response.
On a whim, I replaced all 5 optocouplers, PC501, PC502, PC504, PC201 and PC202 with some ET1102's, [url]https://www.mouser.com/Optoelectronics/Optocouplers-Photocouplers/Transistor-Output-Optocouplers/_/N-6x5ji?keyword=ET1102[/url]...Leave a comment:
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