Question about Mitsubishi VS-5059 50" Rear Projection Television

1 Answer

Trying to get Capacitor Rating

I was wondering if anyone knows the capacitor ratings for the following:

c981, c982, c983 -- all three of these have blown on my TV (Mitsu vs-5059)

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  • RobCline Nov 18, 2007

    Thanks for the quick reply.



    Will get to work checking out all the caps and thanx for the heads up on the regulator.

  • RobCline Nov 19, 2007

    Not to question you, but should those be 22pf and 47pf respectively? Also, do you have the schematics and if so would I be able to get a copy, pay you for a copy or point me in a direction to get a copy?

  • RobCline Nov 27, 2007

    I was able to find a PDF for the VZ-2B chassis schematic. The schematic that I got had those caps listed as 4700pf for all 3 of those. Replaced them and still no joy. Started going through the entire circuit testing voltages and when I tested the connector at DR for 250v the TV started right up. Didn't see any loose solder joints around the connector.



    I inherited this TV from a buddy of mine who had a technician come out to his place to look at it. They told him that the HV was out and was going to cost ~$900 to fix so he decided to get a new TV and asked if I would like to screw with it to see if I could get it working.



    End result: Got a 50" tv for $2.50 in parts, $22 for a schematic and about 6 hours of my time checking things out.

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RobCline,
What you have there is a VZ-2B chassis built in 1995. The caps you're looking at are in the regulator circuit 981 (22uf/50v) and 982/983 (47uf/50v) which is NOT the only problem you have there. I would strongly suspect that the regulator itself will need to be replaced and you might find anywhere from two to three dozen caps in that unit in need of replacement.
If you know how to ESR a cap and have the equipment go for it and let me know what you find. I would be surprised if you found even more than three dozen with high ESR.
If you're not that technically inclined take it to a repair center and have them estimate it before the work is done and discuss with them how many caps they find that are in need of replacement.
If they find less than 12 with high ESR they're not likely doing a very good job.
Bill

Posted on Nov 18, 2007

  • William Rayburn
    William Rayburn Nov 19, 2007

    The VZ-2B is only a paper format, but I will check my sources to see if I can find one that has been converted to pdf...

    The partial parts list I have for those caps show uf not pf...

    Hope this helps!

    Bill

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