Panasonic TH-L32C30Z troubleshooting

[Ragga_NZ]

Hi,

I was wondering whether someone could help me troubleshoot my panasonic tv. TH-L32C30Z.

The initial problem was the tv would turn itself off (to standby) about 10 minutes after viewing (continuous flashing of red LED, no

pattern). Then after a while it would do this after a few seconds after it was turned on.

I used a remote control and lower volume button on the set to do a factory reset. No it turns on, shows the setup page screen goes

dark, setup page comes on again and screen goes dark again, setup page comes on again and then goes dark and stays that way (green led

stays on). Whilst this is happening I can hear buzzing initially from the square transformer at the top of the p board and just before

the screen goes dark a buzzing sound from the top transformer with the two windings. Can't see any bulging or leaking caps. Any ideas????

Thanks very much for your help

Two vids at
https://www.youtube.com/watch?v=L2YKdowUydk
https://www.youtube.com/watch?v=s70p9ft-vX8

[Moreno83]

Re: Panasonic TH-L32C30Z troubleshooting

Could you post some pictures of the boards?

[Neelix]

Re: Panasonic TH-L32C30Z troubleshooting

Post some pictures yes, but I think it's a backlight or inverter fault

[Ragga_NZ]

Re: Panasonic TH-L32C30Z troubleshooting

Here are pics of the p. board and the components that are buzzing on the P. board. I haven't got a pic of the other board at present will need to open up when i'm at home.

[tw2005]

Re: Panasonic TH-L32C30Z troubleshooting

These are ideally what people like to see to help.

It's the US version CA, minor differences(caps)

Fitted to TC-32LX34 TC-L3232C TC-L32C3 TC-L32U3 TC-L32X30, could try searching the models or board version and see if any faults have been reported here?

Yours is TNPA5361AA, I saw one in malaysia but not cheap on Ebay,

I had a tiny 19" and it continuously blinked green, brief flash of the backlight. had one of the H-FETs shorted and what fixed mine was a new transistor and an Electro Cap known to be bad (jamiecon 85deg, 100uf ?)

I'm thinking C7513,7514. Q7503,7504(underside) be worth checking.There was no visual indication, just lucky another reader put me on to the cap, was about to bin it.

Could be the HV caps but I'm out of my area of knowledge really.

maybe track this thread, Aussie version, pretty sure 1 blink is backlight cct so there maybe a common issue.

https://www.badcaps.net/forum/showthread.php?t=41593

[ainsworth]

Re: Panasonic TH-L32C30Z troubleshooting

I have a Panasonic tc-l32u3 I'm getting no display, when I press the power button that's the time the red light comes on and stays on but I see nothing on the screen.

[ainsworth]

Re: Panasonic TH-L32C30Z troubleshooting

Can anyone help

[dskall]

Re: Panasonic TH-L32C30Z troubleshooting

Need good clear straight on pictures of back of tv with cover off and each board.

Need voltages from connector that goes from power supply board to main board. Will need pin#- PIN DESCRIPTION -Pin voltage in standby-Pin voltage when pushing power button and picture of connector on power supply board.
Format:
Pin# - Pin Description - Pin Voltage standby - Pin voltage power on
1 - XXXXXXX - XXv - XXXv
2 - XXXXXXX - XXXv - XXXv
3 - XXXXXXX - XXXv - XXXv
4 - etc.