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Philips 42pf76210 Turns straight back off

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tv tony:
sorry, im off topic, sorry everyone

Ohm Supplies:
Hello,

Sorry, I've not gone, we're just very pushed for time. I've also had a few engineers point out that some of the advice given on here is better than some people pay for and can help put some engineers out of business, again, off topic. I do understand though that engineers (including me) need help,

What the hell does a histogram have to do with the set?

Up and off sounds liek the inverter, (that would make it an LCD :) ) what the number form the board.

Sorry I've been away, glad that someone noticed :))

regards
ANdy

scooby-doo:
Hi Andy

Thanks, yes sorry my mistake it is a LCD tv
When I said powers up and then off again you can just hear the relay click 2 seconds later the blinking standby light comes on 1 long 2 short.
Histogram..I was searching around the net and this is all I could find, managed to get the service manual and like der says it does point to a 12v from the error code section....it also said something about shorting out sgm pins on the SSB to override the 8v protection circuit..but wont work when there is a standby fault..I tried it anyway and it was right it didnt make no difference.
Sorry for sounding dumb but if it is saying a 12v supply fault why would the fault be with the inverters?

The boards in the TV are as follows
PSU=3104 303 39584
Standby/Audio=3104 328 48191
SSB=3104 328 47793
Master inv=6632L 0151a
slave=6632L 0152a


Thanks  again in advance

Ohm Supplies:
“a histogram is a graphical representation showing a visual impression of the distribution of data”
Not sure how that is relevant to a tv, but its better than what I thought it was (a kind of operation, that would be a hysterectomy, Doh).

I would be amazed however, if the inverters in this set worked off 12v, 24v possibly??? With this in mind I’d ignore most of the internet as soon you’ll find a post about the capacitors causing the fault or possibly the fuse.

Best advise would be check you have 24v at switch on.
Remove both inverters and check for shorts against each other (they will be a similar design. I’d especially check the fets, controller ic (probably has 32 legs or so.) also the caps and fuse, DOH!!!!! (OK, best not to ignore the internet then :s_laugh:

Any problems, just ask and I’ll be as much help as I can,
Best regards
Andy

sparky:
hi
histogram is what you get from some one who
no's about history  :s_laugh:
dave

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