Question about Mitsubishi WD-52525 52" Rear Projection HDTV

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Red lamp light on solid WD-52525

First signs of the problem I was watching tv and on the top of the screen there white swirls coming about a third of the way down.I went down stairs when I came back tv was off.Turned it on and it said no signal tv will shut off in 1 min. it shut off I turned it on then all I had was a blue screen with white lines threw the center.I then replaced the bulb with a new on did the same thing only now shaky blue with the white.OK now screen don't light up at all and now I have cover off and I can see the bulb light up for about 5 or so seconds screen really don't light at all, then tv shut down and solid red light.Checked error codes has a 34.I see some say check ballast I have a service manual.and a volt meter so if you say check the ballast tell me how.I am a autotech and pretty handy and need to fix my own tv I live in a small town and can't get any one to come and fix.

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  • autopro Jan 27, 2008

    I went back to the tv project I had it unplug so I pluged it back in and now there is nothing won't power up at all.



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Try downloading these documents:

V26 Chassis Replacement Manual

TV Service Manual (V26):

Posted on Jan 27, 2008

  • nick helpap
    nick helpap Jan 27, 2008

    Any cap that is visibly bulging is probably already degraded at least 50%. The ones that cause the red lamp issue are the pair of 3300 uF's that are on the left side of the board (left of the big metal heat sink). When I did the repair, I bought 3300 uF's from mouser:

    Part Number: 647-UHE1A332MHD
    Voltage: 10V
    Capacitance: 3300uF

    If the cluster of four 1000 uF's are swollen too, you should probably replace those as well. They can be bought from Radio Shack (the higher voltage rating is OK).


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Error 34 is a bad light engine and from what you've explained it sounds like a failure in the lcd as it went... Hitachi 50V500 has a problem with LE's too and they glow red on the screen before their eminent failure... It's not a meter you need on this one and I wouldn't tackle it yourself - just like I wouldn't even think of replacing the engine in my truck. Find a reliable repair center and take it to them..

Posted on Jan 27, 2008

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I will give this a shot and I don't work on TV's but it may help. If the error code is referring to ballast and you think about the ballast in a a flourscent light (essentially a large capacitor) that would indicate "the" ballast (and it could look like anything) may be (is?) defective.

If you have a diagram and / or a schematic in the manual and you can "figger" out what the ballast is physically you can test it. My guess is the ballast is between the input power and "other" electronic components. If you have reasonable accessability to the innards I would suggest starting by checking power from immediately after the input source, looking at the schematic, for values.

If I had to guess it should be the ballast or a component that controls voltage to or from the ballast. These would be immediately after or behind.

But if all voltages check okay (to the schematic) in that area you could have a problem further down the line...essentially an intelligent chip that regulates xy or z that is defective.

Assuming you have reasonable skill soldering (and unsoldering) and the schematic you should be able to find the problem but without a schematic you will be limited to finding and replacing the ballast (probably not all that expensive) and then seeing if it solves the problem or not...if not and you get a new error code you can repeat the process. In general the error codes gives (once interpreted correctly - beware sometimes what the words say is not what they mean) the correct failure mode (but not always the specific problem to draw a distinction). I

If you do not have a schematic check the mfg website...(that's a maybe as many sites do not have one but you might also try an internet search stating your specific model. You might get lucky.)

This is the logical approach. You might also want to add your model number et al. This will give you a better shot at finding someone with specific expertise on your unit. Most of these types of problems (as in what I do) or seen over and over again if you work in a specific field. You may get an instant answer meaning someone has already seen the problem with your unit.

Hope this helps....Tango

Posted on Jan 27, 2008

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