Hello, the tv turn on but there is not picture and the power ligh stay on. I think it may be a firmware probleme and im wondering if there is any recovery possible. It must be fixable since some site ask core charge for replacement board.
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Panasonic Viera TC-L32U22 no picture
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Re: Panasonic Viera TC-L32U22 no picture
You need to carry out some checks before you write off the main board. The power led is on so it looks like your standby voltage is working. Now you need to check that you have all the other voltages given on the power supply board .
Manual available for download from
Last edited by dick_barton; 03-12-2016, 05:02 PM.Willing to help but I'm no expert.
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Re: Panasonic Viera TC-L32U22 no picture
I will test the tv for sound on all input but what i know is that the backlight is on but the standby led stay on. That why i think it is controlled by the mainboard and it dont post or something like this. i will try to find some service manual since there is no voltage on the pcb. All caps look good and they are rubycon.
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Re: Panasonic Viera TC-L32U22 no picture
i got the service manual and they have TP listed but im not able to find them at all .
I did some more testing.
HDMI connected to PC and its detected by the computer but no picture.
When i change input i get different backlight level.
I whas not able to get sound with hdmi.
and here are all voltage at the A03 connector.
tv_on
1=0
2=1.8
3=2.9
4=.09
5=5.98
6=3.25
7=2.32
8=0
9=18.54
10=0
11=12
13=12
13=0
14=6.09
15=6.09
tv_off
1=0
2=0
3=0
4=0
5=0
6=0
7=0
8=0
9=10
10=0
11=0
13=0
13=0
14=6.09
15=6.09
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Re: Panasonic Viera TC-L32U22 no picture
Originally posted by Diah View Postthis is still nothings, use tourch light and go in menu first , and check gama brightness ...light it may values zero
Self-check indication and forced to factory shipment setting:Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remotecontrol for more than 3 seconds.
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