Panasonic P50G20E

[Stanislav]

Re: Panasonic P50G20E

[tom66]

Re: Panasonic P50G20E

Have a look at the manual for the G20
http://www.tgohome.com/ServiceManual...&Search=Submit

Do any of the options match, or are they completely different?

[Stanislav]

Re: Panasonic P50G20E

Tom, with your help I think it will solve the problem of fan

outputs are 4 fans with 3 wires each. a power which is connected in parallel and 4 fans and yellow wire that is separate for each

This is a picture of my board has no connector and it is clearly visible

[tom66]

Re: Panasonic P50G20E

Very good, though this confuses me: Why would it be configured for fans if the connectors were not placed? Either you need to make a bridge between GND and fan signal line, or between fan line and +3.3V. I'd try the GND bridge first, try identifying which pins on that connector are ground. The thin trace is the fan signal line, probably.

[Stanislav]

Re: Panasonic P50G20E

My English is bad sorry

I wanted to say that the new board has connector,and the old is gone connector ,of it is clearly visible which are GND and which are "+
"as +'m not sure but 4 are connected in parallel so it must be +

[tom66]

Re: Panasonic P50G20E

Your English is far better than my Bulgarian! Of which I know about zero words...

It makes more sense for V20 board to have connector on it. My tests above apply. Check voltages on each of the pins to locate the fan voltages. You could hook up a fan here if you want; it may end up being temperature controlled. Some other pins will be ground, plus there will be one extra for each fan, a signal line, which either must be grounded or connected to a positive supply. Try grounding those pins first with a blob of solder.

[Stanislav]

Re: Panasonic P50G20E

OK
I have a power from 6.960V Outputs pin for 4 fan


Hello-здравей
now you know something in Bulgarian

[tom66]

Re: Panasonic P50G20E

Do any pins have connection to ground. I just had a thought that if it uses speed control it might not show up, because it uses low-side switching. Can you mark on the image what pins show 6.96V?

[Stanislav]

Re: Panasonic P50G20E





other 4 pins go on the other side of the board each connected with a resistor

[tom66]

Re: Panasonic P50G20E

In which case, please make a jumper between each signal pin (neither GND nor 6.96V) and each GND pin, a bit of solder will be enough. If it still gives 11 blinks, it probably wants a positive signal.

[Stanislav]

Re: Panasonic P50G20E

well just add that the resistors are 4.7 k and they are related each other (if that makes any difference)

[tom66]

Re: Panasonic P50G20E

So if the grounding trick doesn't do it, we can probably wire them to the 7V (6.96V) safely, with no extra resistors, as assuming they go into ground or into a diode drop, they'll see maybe 7V, and dissipate at most 10mW (they are probably 0603 size, 63mW max.)

[Stanislav]

Re: Panasonic P50G20E

[Stanislav]

Re: Panasonic P50G20E

I can not tell you how grateful I am to you

[tom66]

Re: Panasonic P50G20E

Damn good TV, I hope you enjoy it
Adding a fan anyway?

[Stanislav]

Re: Panasonic P50G20E

........................................

[tw2005]

Re: Panasonic P50G20E

Unbelievable, full marks for human intelligence on this one. will be a handy reference. Hats off guys

[Stanislav]

Re: Panasonic P50G20E

My friends here are details on how to enter service menu

this applies to all models -"G" and "V"

[Stanislav]

Re: Panasonic P50G20E

Hi my friend

I dont have sound on cable TV. all other signal sources have sound but no cable tv

I don't have the option to change the sound decoders

[tom66]

Re: Panasonic P50G20E

This may be because the board is V20B... probably designed for different cable standard (maybe even Freesat, if in UK) than in rest of Europe... you may have to use an external box.