Hi all, Fault F498, On the dvd part of a, panasonic combi, Will not open the tray or function.
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Re: Panasonic Dvd Vhs combi
The model number would help... -
Re: Panasonic Dvd Vhs combi
Nv-vhd1Comment
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Re: Panasonic Dvd Vhs combi
Start by downloading the service manual and check the power supply voltages. Seems like it might be a communication issue between the mirco and eeprom. Try heating the eeprom ic7702
I also found this: https://www.elektroda.pl/rtvforum/topic258059.html and this: https://translate.googleusercontent....cdbFqPzzg83ONQLast edited by R_J; 12-03-2020, 10:38 AM.Comment
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Hello everyone. π
As per thread title, this unit has a serious SMPSU fault. It blows F1001, which is a 10A M205 in the phase from the mains input.
Very first thing I tried, was simply replacing the fuse, but the replacement ceramic fuse blew immediately.
Looking at the schematic for this PSU, I then removed what I thought was the next likely candidate: D1001 - the HV main bridge rectifier.
This isolated the fault(no longer blows the main fuse), but does not point me to the actual fault.
There are no devices that have exploded or otherwise show signs... -
I picked up a Panasonic NH-P70G2, though it would apply to the NH-P80G2, NH-P70G1 and NH-P80G1 models as well, as maybe some other models. This one was coming up with a H86 error. After lots of testing and googling it was an error with one of the thermistors in the condenser area.
The attached French service manuals is incorrect, TH11 is gray and is a 95k thermistor and TH12 is black and is a 35k thermistor.
In my case TH12 was bad. I was able to get a 35k thermistor on AliExpress. It's 6mm in diameter.
Unfortunately the whole machine has to come apart to fix it.
I have... -
Hello! yes I know there is already lots of information about this issue. I have a Panasonic TC-P55ST50 that originally displayed an 8-blink error code. Following the troubleshooting flowchart, I ended up replacing the SS board. However, even after replacing it, the issue persists. The TV turns on and stays on without displaying an image, and continuity is confirmed on all connectors. What am I missing hereπ€?
Ok Im a mechanical engineer ...but I thought I was able to follow a rather simple flowchart for electric troubleshooting π.
TV Model: Panasonic TC-P55ST50
...11-20-2024, 08:52 PM -
Hello,
I bought a Panasonic 40" TX-40AX630B TV from Richer Sounds 7 years ago and it has developed a strange fault. If I attempt to press any button on the back of the TV or remote control (access media features etc.) the TV locks up for a few minutes or longer and sometimes goes blank. However, if I turn the TV off and on again and quickly select a channel it will work fine all day long, as long as I don't touch the remote or controls on the back of the TV.
I've tried changing batteries on the remote, changing plug sockets and doing other things such as a... -
After getting the backlights up and running a second fault has emerged on this TV. I was going accept defeat and move on but thought I'd have a quick look at it in case it was something simple. The right side of the display exhibits a panel brightness (not backlight brightness) pulse every 2-3 seconds in a stable timing.
I poked about on the TCON test points and found one voltage that is fluctuating in the same pattern. VGH-ODD (Pin 47 of U10) is sitting at ~-6.5v then goes up to ~28v when the brightness pulses then goes back down to ~-6.5v again in a repeating pattern.
...03-22-2023, 02:58 AM
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