Question about Pioneer SD-643HD5 64" Rear Projection Television

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Won't turn on

When I turn on the standby button it comes on, but the green light will not come on when I turn on the small power button

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  • tharsing Sep 29, 2008

    I have the same problem, I checked the fuses inside the TV. I only found 5 fuses. All are in good order and none are blown. What now?

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In most cases the fix for this is simple if you know how to test and find blown fuses. The same happened to mine and it takes 5 minutes to fix and $4 from radio shack.

1) turn off and unplug the TV
remove back panel from TV (like 5 to 10 screws)
2) locate the small fuses on the circuit board -- they are slightly right of center and kind of hidden behind taller componets. There are several, some "standard" size, some shorter GMA-type. In my case it was one of the shorter GMA 4 or 5 amp ones that had blown.
3) find the blown fuse with a test meter (no or limited continuity)or by taking each out and giving it a visual inspection. DON'T TOUCH ANY OTHER ELECTRONIC COMPONENT -- some parts can retain a electric charge long after the TV is unplugged and you don't want to get zapped!
4) replace with fuse of same type
5) re-install back cover.
6) enjoy!

As a note, while I was in there I cleaned my 3 CRT lenses, they where very dusty, used a Canon optic lense cloth.

Also, I have found that once my fuse blew for the 1st time it happens now periodically (once every 3 months or so), so I assume it is a symptom of a greater problem, however this fix is so easy and I keep extra fuses on hand that I haven't called tech to check it out (TV is kinda old anyway).

If you would like a better explaination than this, search the web because it seems to be a common problem and there are a lot of posts on it (www.hometheaterspot.com)

Regards

Posted on Jan 24, 2008

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