Question about Mitsubishi HC1500 DLP Projector

3 Answers

Zap sound plugging PS3 into projector HDMI. Now ports don't work.

I was plugging a PS3 into the HDMI port of my my Mitsubishi HC1500 projector and I heard a zap sound and now the HDMI, as well as VGA and component inputs on the projector no longer work. The composite and S-Video inputs still work for some reason though. Both the projector and PS3 were plugged into grounded sockets (though the PS3 was plugged into a step down voltage converter first) so I wouldn't have thought that static electricity could be a problem. I was wondering if perhaps there might have been a fuse inside that burned out and needs to be replaced, or if the inputs are fried and I need to get them replaced. Any help would be greatly appreciated as the unit is no longer under warranty. Thanks.

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  • spmact Nov 21, 2009

    Is there a chance of this being a simple repair, or will major circuits have to be replaced?

  • spmact Nov 22, 2009

    So you think it's the step down voltage converter that did it?  I was using it because we have 220V electricity here, but the PS3 is an American model so it would need 110V.

    Do you think it would be simple enough to replace that part, or was there some major damage done?

  • spmact Nov 23, 2009

    Thanks. There's warnings about not opening the unit due to latent charge inside, so I'll take it to a repair shop and tell them about the diode.


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Normally fuses do not make a zapping sound when they blow. Sounds like that are never good.

You are most likely going to have to bring the tv in for repair.

If you are brave and confident you can open the tv and look for burnt parts. Its most likely just a diode. if you find a black part that looks like a big black diode, you can replace it with n1004 diode. They are usually used as circuit protection. Beings you plug things in to it, it may have them to protect the rest of the tv is if something is hooked up wrong or goes bad while hooked up to it.

the diode will be near the plugs.

repair shops will replace the whole input board. you may also be able to find online the replacement board.

Posted on Nov 23, 2009

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Hello Spmact: Unfortunely you may of blown the input board assembly. There sounds like you had some voltage on that HDMI Cable. I am not sure why you were using a step-down voltage converter unless you were steping in down from 220VAC to 120VAC. There are no fuses on the A/V input signal board, you may of blown the Audio/Video converter and switching IC's on the board. I recommend you not use the step-down converter on the PS3, Even though you were grounded the converter may be faulty and producing ac feedback into the PS3.

Posted on Nov 22, 2009

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U have almost certainly burned out the input circuit for the HDMI, this was most likely caused by static build up or a difference in ground potential between the two devices, there is no fuse for this input, u will need to have the unit repaired.

Posted on Nov 17, 2009

  • yadayada
    yadayada Nov 23, 2009

    you can open it up if u unplug the unit fro 10 minutes before getting into the chassis.


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