Question about Mitsubishi HC1600 Projector

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Mitsubishi HC1600 Projector unit powers on and shuts off after a few seconds

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It sounds like the unit tries to power on and in the procces hits a bad component, wich in turn shuts the system down for protection. It sounds like all the problemts the new lcd/plasma tv's are having 2 nowadays, bad capacitors are being used by the billions and now there are millions of (top dollar) electronics out there that are breaking down bgecouse of these bad caps. If you feel, open the unit till you can see the print boards. Google for an image of a "popped" capacitor(cap), they supposed to have flat tops on them, but when bad, the tops bulgde up/out and /or leak a tiny amount of fluid. Replace the popped ones (prob just 1) with one from Radioshack orso, they MUST be of SAME or HIGHER voltage then the one removed, also makle sure to install(solder) it with the negative(-) in the corresponding hole. Most the caps will be 105 temperature but Radioshack only has 85, theyve been fine for my monitors and tvs. The actual fix could be just 20 min at a $3 cost, a repair man charges around 200/300 for a new powerboard...Hope this helps some..if you decide to do it yourself, take pictures as to remember how to reassemble it and watch a video or 2 on Youtube on how to replace capacitors..I m pretty sure this is your problem!...Good luck...Ps bad caps(capacitors) can couse many many different symptoms ie; sound, picture. on off problems, only sound, only picture etc...

Posted on Feb 01, 2010

  • roadtrippin Feb 02, 2010

    Hi there again

    I went over some more projector problems and felt like I had to be more clear and precise, so when someone's unit breaks down, they can open it them selfs and have a look before sending out the (hungry) wolfpack of repair-men (joke!)...I wrote all this previously to guide someone in the process of fixing their lcd/plasma tv, but the process is 100 percent the same, just read "monitor/tv" as "projector"..Here goes the detailed instructions;.........................

    The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in...

  • roadtrippin Feb 03, 2010

    Hi there once again lol,, I found a way to finally upload these pictures of broken/popped capacotors. This should help even more in the diagnosis of your projector powerboard, good luck and please rate, thank you!

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