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The most common problem is the Power/Backlight Inverter Board. There are 6 mini transformers on the board, one goes bad and the TV will turn itself OFF automatically for " Protection Mode". Replace the whole board or replace the bad mini transformer.
Part number#
Whole board, BA71F0F01042
Mini Transformer, LTZ2PC0MS008
This is probably due to dry solders in the power supply area of the tv... next time when it powers off give it a whack on the side and see if will just light up for a moment.. If it doesn't just open the tv and check for dry solders, loose contacts and faulty capacitors.. PS:I would not task some one without experience in electronics to handle this one. This shouldn't cost you much even if you hire a tech anyway..
TV needs new lamp as symptom shows existing lamp is weak and causing repeatedly on-off Please replace lamp in TV, replacement procedure is written in user manual and it is not difficult. Always buy Sony original lamp for TV safety. Let me know if you need further help. Thanks.
I had the same problem with mine turning off after 3-5 seconds. After much research I found a suggestion that on some combo units the vcr part could have a power supply cutout if it is not working correctly. I tried to insert a tape and found that the tape mechanism would not accept a tape. I used a little bit of force and managed to insert a tape. I then played the tape forwards and backwards and the power stayed on! I ejected the tape and found the TV then worked just fine. The power has now been on for over one hour. I hope this give you another avenue to try and fix your problem.
if all you want to do is disable the vcr portion turn the set on , install a blank vhs tape it has to be blank or the vcr will try to read it .and the tv and dvd should work fine. this is a timing problem in the vcr deck its not hard to fix but it is a pain.
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