Electronics Repair - Hitachi 51UWX20B Power Issue

Author

Hitachi 51UWX20B Power Issue - Assistance Requested

Matt Jacobs

2006-01-16, 11:51 pm

Greetings. Last week I came home to a house of blinking VCRs, microwaves,
etc. Long story short, despite being plugged into a surge protector, my
hitachi 51uwx20B will not work.

Symptoms:
No picture or sound.
Remote and power button on unit will turn on unit.
Red power LED on front lights up, clicks can be heard inside unit.
Within first two seconds or so, I can turn the unit off with the remote,
else I need to turn it off with the button on tv.
Have unplugged unit for several days while out of town, did not resolve the
problem.
Have unplugged everything connected to the inputs.
Inside are 5 LEDs. 4 Green, 1 Red. When unit turned on, all but D928
(green) light up. Red is on, but I would say it looks as though it is not
at full brightness (just a guess, never looked inside when it was working
fine).
There are three fuses I can see in the vicinity of the power supply board
with the LEDs on it, all pass simple continuity test.

With the exception of "call a service tech," does anyone else have any
advice, tips, things to check, additional info needed? It was purchased in
early, 2003 out of warranty. I am not afraid to poke around in there with
some worthy guidance, I have a service manual to assist. It's pretty dusty
in there, so I'm going to try clearing that out, but I'm doubtful that will
help, as the failure coincided with some electrical "event" in my apartment.
Thank you VERY much for any assistance,
Matt

PS: a reply to sender will actually get to me (I'm THAT desperate!! :) ),
and yes, I do understand techs put food on the table with service calls like
mine, but I'm in the middle of planning (and paying) for a wedding, so
things are a little tight here as well. not an excuse, just an fyi that I
do understand..

(cross-posted to alt.tv.tech.hdtv)

Art

2006-01-18, 11:51 pm

Buy a service manual from Hitachi, or borrow one from a tech you happen to
know. Then have at it, when done, ask the service tech if he then would be
interested in servicing it for you?
"Matt Jacobs" <menkaure@cox.net> wrote in message
news:lDZyf.11803$sA3.8707@fed1read02...
> Greetings. Last week I came home to a house of blinking VCRs, microwaves,
> etc. Long story short, despite being plugged into a surge protector, my
> hitachi 51uwx20B will not work.
>
> Symptoms:
> No picture or sound.
> Remote and power button on unit will turn on unit.
> Red power LED on front lights up, clicks can be heard inside unit.
> Within first two seconds or so, I can turn the unit off with the remote,
> else I need to turn it off with the button on tv.
> Have unplugged unit for several days while out of town, did not resolve
> the problem.
> Have unplugged everything connected to the inputs.
> Inside are 5 LEDs. 4 Green, 1 Red. When unit turned on, all but D928
> (green) light up. Red is on, but I would say it looks as though it is not
> at full brightness (just a guess, never looked inside when it was working
> fine).
> There are three fuses I can see in the vicinity of the power supply board
> with the LEDs on it, all pass simple continuity test.
>
> With the exception of "call a service tech," does anyone else have any
> advice, tips, things to check, additional info needed? It was purchased
> in early, 2003 out of warranty. I am not afraid to poke around in there
> with some worthy guidance, I have a service manual to assist. It's pretty
> dusty in there, so I'm going to try clearing that out, but I'm doubtful
> that will help, as the failure coincided with some electrical "event" in
> my apartment.
> Thank you VERY much for any assistance,
> Matt
>
> PS: a reply to sender will actually get to me (I'm THAT desperate!! :) ),
> and yes, I do understand techs put food on the table with service calls
> like mine, but I'm in the middle of planning (and paying) for a wedding,
> so things are a little tight here as well. not an excuse, just an fyi
> that I do understand..
>
> (cross-posted to alt.tv.tech.hdtv)
>

Matt Jacobs

2006-01-24, 11:57 pm

Thanks for the tip, Art. Turned out someone else in the group actually took
time to help instead of wasting time to be a smart XXX. 'Twas a blown pico
fuse (E907 for any future googlers, 3000mA) in my case. $1.00 fix. Unable
to locate any other failed components, and everything appears to be working
100%, I will update if anything changes.
Thank you so much again to the person that helped me via email (I wont dime
you out in public. :) ), to you Jumpster Jiver for the advice, and thank you
to everyone who read the original post, and would have helped if you could
have. I've seen a lot of people help a lot of others in the past week.
Seems like there's a nice core of people in this group.... for the most
part.
Take care all,
Matt

"Art" <arthurgernberg@comcast.net> wrote in message
news:jtOdnS8Mt7A5VFPenZ2dnUVZ_sWdnZ2d@comcast.com...
> Buy a service manual from Hitachi, or borrow one from a tech you happen to
> know. Then have at it, when done, ask the service tech if he then would be
> interested in servicing it for you?
> "Matt Jacobs" <menkaure@cox.net> wrote in message
> news:lDZyf.11803$sA3.8707@fed1read02...
>
>

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