Panasonic TH-37PX80EA thunder lightning

[tw2005]

Re: Panasonic TH-37PX80EA thunder lightning

can i short the Q555 also to get +15V ?

you're not giving up on this are you. Look I've never had to muck around this deep in a P board so I just don't know but if that MCU is dead then all the other voltages are not going to turn either. If you can get another chip then maybe have a go if it's cheap enough,, nothing to lose really.

What I'm worried about if you keep bypassing and the voltages are not switched in the right sequence it may damage the panel.

Is the 15v present though for you to jump? 5vstb and and F15V are standby voltages, looking at the schematic I suspect the 15V won't be there?

I guess you're trying to see if the A board is ok and somehow you can force the Pboard on to run the TV.

Can a used board be sourced cheaply?

[rtstorm]

Re: Panasonic TH-37PX80EA thunder lightning

ok, i will try to replace that IC (IC 501) but i do not know if this have .rom file that need to be flashed. It is microcontrollers and microprocessors in one unit.

If this do not have to be flashed then i will replace it

[tw2005]

Re: Panasonic TH-37PX80EA thunder lightning

ok, i will try to replace that IC (IC 501) but i do not know if this have .rom file that need to be flashed. It is microcontrollers and microprocessors in one unit.

If this do not have to be flashed then i will replace it

no idea I'm afraid

[rtstorm]

Re: Panasonic TH-37PX80EA thunder lightning

hello, i found some burned diode on this board. So can you help me verify if this transformer is bad? All 3 mains are shorted and all 3 secondary are shorted (by shorted i mean that pinout in pair are shorted, all 3 pair does not have el. connection to other pair). I does not make any sense, if main need to be 0 Ohm then why put there a diode?

[rtstorm]

Re: Panasonic TH-37PX80EA thunder lightning

i am sorry the main pair near burned diode is 7.4 ohm, all other pairs are 0 ohm