TV Repair Questions? Ask a TV Technician for Answers ASAP
No. Once the screen is blank nothing appears on the screen.
I need to go to bed (work in the morning - its 11:10 pm where I am) any idea on time scale or can I just leave my session open? Thanks.
Sorry Anthony, I sent an earlier reply that does not appear in the dialogue. I said I have a meter and could take the voltage readings if you can tell me where to take them. Also if the volts show (what? zero?) would I need an engineer to replace the part of could I get it and do it myself. Thanks.
Not sure if I can continue this sequence but attached is photo of board in the TV with the points at which I was able to measure voltages. They appear to be nearest points to cables going to the screen back light. They read 840V AC when the light is on and screen working. They both read ZERO V when the light goes off. There appears to be a fault on the board but no visible issues eg burnt components etc. Does this require and new board via a service engineer or are parts available to replace it myself. Thanks for you excellent help so far. Nigel
Thanks Anthony. Photo attached.
The fault is intermittent. I have just watched a considerable length of normal operation this evening, but yesterday it was only staying on with a lit display for about a second each time it was turned on, then there was perhaps half an hour when it was working - which was around the time I took the voltage readings I gave you, some on, some off. When its on the display is normal, when its off there is nothing. At the moment it is working again. Since this is the case and it is very difficult to diagnose intermittent faults (I know!) perhaps I should just thank you again for your excellent efforts and wait until the fault either goes away (?) or settles down to a hard fault. It has occurred to me to wonder if some of it may be temperature related as I have the back off the set at the mo which may help cooling. I shall try replacing the back and see what happens. Thanks for your help, Anthony, lets call time on this until something happens. Cheers, Nigel.
I have taken the board out and then re-seated it. I noticed that the back of the board was quite dirty. So I cleaned it. May have been dust attracted by static or by warm air passing by. But its clean now. having replaced it the set worked ok - but then it did that from time to time anyway. Am now out for the day so will check again on return.