Philips Widescreen TV EM1.2UAA / 30PW850H37A

OK, No matter, fixed it, new chip was duff, wtf, lucky I ordered 2.

Are duff chips a common problem? I recently bought a frame output chip for a Hitachi TV that was shorted across two pins.

In looking ahead, to answer your question I myself have had bad IC's that were new.

Because the drive IC had to be changed, it would be a good idea to see if there is anything unusual that could have caused it to fail in the first place. I have had everything from a CRT that arcs intermittantly to components becoming defective in the circuit area that works with the IC.

Jerry G.

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For parts to be defective from new is unbelievable, this was a Philips part made in Thailand from a reputable parts dealer. Where is the quality control? God help us when they start making chips in china.

From researching this fault on the web it seems this tube/tv has a history of flashovers and early tube failure. Flashovers usually occur when switching from cable input to component video. In fact this is the third flashover that I have seen (heard) on this, the chip surviving the previous two. I have seen modification bulletins for other brands using the TDA6108JF involving extra earth bonding between the CRT board and aquadag/tube bonding but on this crt board the amount of ground copper is almost nil. In fact the board is of such poor quality the tracks lift as soon as they see an iron, very bad for Philips but typical of the decline in quality of domestic electronics, one reason I got out of the TV/video repair scene in the late 80's and went to medical/test equipment servicing where quality was still in evidence.

In the field I work in now, test equipment/medical no, but domestic repairs I couldn't say. I did replace the Lopt in a projection TV along with all the associated stuff that fails with it and that lasted only 12 months where the previous had run for 10 years without problem. That got binned, just couldn't be bothered with it.