I have philips rear projection tv 43pp8545. The picture suddenly went out but the sound is ok. the set is working on off and change of channels with sound only. There is no light and blank screen. Please inform what part went wrong and how to repair it. I can repair the crt tv 51 and having 30 years of experience in electronic and can do soldering and repairs. But i have no idea how to repair a projection tv. I shall be very thankful if you can inform from where i can get a circuit diagram or block diagram of projection tv.
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You can get the replacement Flyback at the following link, and they provide free instant messageing tech support to take you step by step with the replacemnet proceedure. You need phillips 32942 flyback, its listed in their flyback catagory. http://servicemanuals.vstore.ca/
This is a common problem with older Philip Magnavox projection sets. Over time one of the IC chips on the main power board begins to fail. You can find replacment chips and repair instructions on www.magnavoxhelp.com.
The most common problem is convergance amp ic, but with out troubleshooting it's hard to pin point whats wrong.
The quick answer to you problem is critical in what your set was doing
prior to it shutting down. Do you remember it having a Color problem
like alignment of convergence? Was the sound cutting out on you? Or was
there part of the picture missing? If one of these then you could
eliminate time and money. To be honest you would save money DIY. You
also can call PTS at 18008447871 and get the price on Deflection board
or Large Signal, whichever has High Voltage Transformer on it and
price. This will save timetroubleshooting,
because it takes the knowledge of knowing voltages, components, etc.
Which require skills the average person may not have. Hope this helps!
You have no high voltage, like many in this forum, this model of Philips has some of the same problems. Look around here you may find the answer to your set. If not check Vertical IC, TDA8177, audio ic on signal board up front on left. check Power supply first for blown fuse, 1000, 2004, 1300, 1900 etc. No sound or pic means something is open. Does set has L E D lights on front of set?