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Old 01-15-2012, 11:05 PM
lnx64's Avatar
lnx64 lnx64 is offline
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Join Date: Jan 2012
Location: New Port Richey, FL
Posts: 1,787
Helooooooooo

Helo guys, I'm obviously new to this forum, and wanted to share my TV and any questions I may have.

I use a Hitachi in my bedroom, as my main TV, and love using it.. It's a very early 80's model.

It's solid state, but there exists an earlier board revision from 78, that for whatever wisdom Hitachi had, used a few tubes in the color decoding and CRT driving (but the rest, solid state).

When I got the TV years ago, it was busted, wouldn't power on, with the completely solid state board. I recapped it, adjusted the flyback, and viola, had not only power, but a decent raster.

http://img.photobucket.com/albums/v3...n/hitachi1.jpg
(It even says Solid State on the back. I wonder what the hybrid tube model said on it's back)

http://img.photobucket.com/albums/v3...n/hitachi2.jpg
http://img.photobucket.com/albums/v3...n/hitachi3.jpg
Yes, the flyback is in rough rusted shape. I don't know how to properly clean it, but it appears to work just fine.

http://img.photobucket.com/albums/v3...n/hitachi4.jpg
Busted and terribly ugly anode cap.

http://img.photobucket.com/albums/v3...n/hitachi5.jpg
Cleaned and relubed tuner assembly (though it's useless as I only use Channel 3 now since the digital switchover)

http://img.photobucket.com/albums/v3...n/hitachi6.jpg
Cleaned and ready to assemble.

http://img.photobucket.com/albums/v3...n/hitachi7.jpg
Assembled. Notice the cleaned and repaired anode cap.

http://img.photobucket.com/albums/v3...n/hitachi0.jpg
Ugh, what a weird raster. Turns out I had a problem on one of the caps that was responsible for vertical hold.

http://img.photobucket.com/albums/v3...n/hitachi9.jpg
Ok, good raster,but now it's green.. Apparently the POTs on the neck board are in terrible shape, and require a LOT of deoxit.

http://img.photobucket.com/albums/v3...tachibirds.jpg

PERFECT!

Anyways, here's a video of this TV the day it was repaired and operational.
http://www.youtube.com/watch?v=95DSp8czCe4

I have however, changed to the older tube hybrid board though, it's flyback was in better shape, and the board has it's own quality of the color yellow for some reason.. Yellow is a gold color, but you know what, I like it!!

Here's a comparison.

Solid state board: http://img.photobucket.com/albums/v3...ragon/sstv.jpg

Hybrid board: http://img.photobucket.com/albums/v3...ragon/tbtv.jpg

A color test on the hybrid board. Notice the golden yellows: http://img.photobucket.com/albums/v3...on/color-1.jpg

The TV setup in my room: http://img.photobucket.com/albums/v3...on/tvsetup.jpg

And lastly, a video of the TV running on the hybrid board: http://www.youtube.com/watch?v=fmizu9s3uJ8

Sadly, I didn't take any pics of the hybrid board. But when I get the TV apart next time for more servicing (I need to possibly adjust the focus a little better), I'll be sure to snap a pic..

Keep in mind, while I'm good at this stuff, im new to the terminologies..
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