Question about Durabrand DWT1905 TV

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Tooooooooo Bright I turned off the TV one night and the next night when I turned it back on the TV was too bright. I tried to adjust the colour via the menue key but notthing seems to help. Is there a reset somewhere on the TV that I could use? I really don't want to get rid of this TV it has an awesome picture when it works right, PLease can any one help?

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I would start by making some voltage measurements on the signal processor IC to see if the black level pin voltage can be varied. if not that might be the issue, but I have a feeling that it will vary so lets look at what else could be wrong. I know I harp on this circuit so much, but I have seen its failure so many times that I suspect it when ever HV issues occur. Inside of your TV there is a circuit that is supposed to shut the TV down whenever there is excessive HV pulses coming from the HV output of the IHVT (flyback transformer) if this circuit fails there will be an excessive amount of HV delivered to the anode of the picture tube, and this would cause the picture to become too bright. In addition this could be caused by a failure in the HV/Horizontal section of the TV in question. I would begin checking waveforms and voltage levels in that section if the brightness control on the signal processor IC is indeed working but not controlling the black level of the picture. I can not tell you what components are bad, just that you should concentrate on the HV/Horizontal section and the shutdown circuit for measurements. Get a schematic. If you dod not feel comfortable doing this take the set to a qualified TV technician.

Posted on Sep 03, 2007


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This I won't explain it's a very long process if done right . Rear projectors has to be clear because with time you will notice the picture looks like you have catarack. or white filtering of the picture. This is when you know it need's cleaning, I do it all the time when I go to customer home, yes I do house call's. I think I'm the last one out there, most shop what's the tv in the shop mostly to be able to control the price there about to hit you with and if the customer doesn't pay there just sale it, they have the control and not you.

I hope this help, keep in mind it's very expensive to have tv repairs, but you have to pay, this what keep's tech going without them, well you can just imagine.

What About Bob
Timmins, Ontario

Nov 04, 2007 | Apex Digital GB4308 43" Rear Projection...

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