Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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Mitsubishi WD-52525, replaced bulb but still not working

The red light was on so I bought a new bulb and put it in. Pluged up the TV, waited until the green timer light went out pressed the power button. The fan came on, but no picture. After a minuit or so, the red light came on again buring solid. What is the likelyhood that the replacement lamp was bad? Additionally, I removed the lamp cover and placed a plastic piece in the hole to close the switch so I could see what was going on with the lamp. after the fan comes on for a few seconds, the bulb lights up for about 10 seconds and then goes off. After a minute or so, the red light comes back on. What do you think is going on?

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  • jberry11111 Dec 19, 2008

    So you think the FMT PCB might be bad? Does this mean the bulbs are probably good? I am debating on whether or not to send the bulb back and get a replacement (however, if they test it and the bulb is good, I will get charged).

    Additionally, is it common for the bulb to come on for a few seconds when you first press power and then go out?

  • jberry11111 Dec 20, 2008

    you are exactly right, C9A37 and C9A38 are both bulged. What do I need to do to fix this? Any idea of the cost?



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SYMPTOM: Power LED does not stop blinking after plug in.
CURE: Check C81A2, C81A3, C81B3 and C81B4 (1000 uFD, 16V, 105C) on the DM PCB.
Check C8F19, C8F21, C8F22 and C8F27 (1000 uFD, 16V, 105C) on the FMT PCB.
If any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C).
this is what we at the shop check first. it is quite common. on the power supply board look for swelled up capacitors

Posted on Dec 19, 2008

  • Willie Howell Dec 19, 2008

    if the new bulb comes on breifly i would have to say its probally good. i would still point my finger at the capcitors on power supply board.
    check C9A37 and C9A38 both 3300 UFD 10 V part # 181P732040 on the Power PCB
    (part # 930B921002 look for swelled up capacitors this is the first this is the first thing mitsubishi technal recomends



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