Question about Sony FD Trinitron WEGA KV-32HS500 32" TV

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Sony FD Trinitron WEGA KV-32HS500 will not turn on.

It started about three weeks ago. I wasn't able to turn on the TV with the remote or the power button on front of TV. No sound or picture, just 7 blinks (sometimes 6) of the standby light, pause then 7 blinks again, etc... . After a day the TV would turn on again. Then it wouldn't come on for a couple of days, but would then work for a couple days. I'm now on the TV doesn't turn on cycle and it's been a week. Please help.

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7 flashes is horizantal deflection stopped.
There is apparently a service bulletin, Service bulletin E28041743, that the general public is not privy to which further explains the common D board faults. The D board is what I replaced two power transistors (1RF1B7N50A) and 1 18 pin chip (SHINDENGEN MCZ3001D 03525) on.

Posted on Jan 20, 2009

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  • blueextc3221
    blueextc3221 Jan 20, 2009

    Personally, I've read of so many successful repairs that involved just the replacement of one or more of the MCZ3001D ICs that I would be hesitant to replace the capacitors and resistors. So I would first replace the ICs and see if that corrected the problem.

    FWIW, I replaced the two D-Board MCZ3001D ICs on my KV-36XBR400 over two years ago and the TV has worked perfectly ever since.

  • blueextc3221
    blueextc3221 Jan 20, 2009

    6 or 7 flashes means that either IC8002 or IC6501 is faulty. You can buy them at

  • blueextc3221
    blueextc3221 Jan 20, 2009
  • blueextc3221
    blueextc3221 Jan 20, 2009

    the easiest way I found to access the MDZ IC`s was to slide the plastic chassis out a bit so I could access the screws holding the D-board down, unscrewed them and unplugged all the clips and connectors. I couldn`t go wrong as all the connectors on my set had different pin counts and it was impossible for me to plug a connector into the wrong place.
    I unscrewed the small triangular audio board on the side and moved it so it wasn`t in the way then gently picked the D-board up, slid it out the side and stood it on it`s end with the FBT leads still attached. You can then access the underside of the board easily.

    If I could fix the TV without having to unplug the FBT connector on the back of the tube then all the better. I`ve heard you can damage things if it isn`t done properly plus I haven`t done it in years and didn`t want to risk anything

  • blueextc3221
    blueextc3221 Jan 20, 2009

    Before replacing, just do a cursory inspection of the board and check for cracked solder joints.



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SOURCE: Sony FD Trinitron WEGA standby light blinks 6 ti

I have over 10 years experience in electronic tech support.

I know this isn't what you want to hear, but the problem you've described can't be fixed with
troubleshooting. Your TV will have to be repaired. There is a part that has developed a defect and needs to be replaced. If you're still in warranty, the TV will be repaired at no charge to you. The warranty would likely be at least one year from the date of purchase from the manufacturer. If you purchased an extended service plan they will repair the TV at no charge as well.

If the TV is no longer in warranty, it will likely cost a minimum of $150 parts and labor. This is assuming that you only need one
circuit board or small part. If the problem is more than one of the circuit boards, the price of repair could go much higher.

I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please let me know if I can be of further assistance.

Posted on Jul 11, 2009

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