Re: JVC 55" Rear-projection TV

It'd make a bodacious oscilloscope for your local technical museum.

:)

--Winston

=A0 =A0...Jim Thompson

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=A0 =A0...Jim Thompson

=A0 =A0| =A0 =A0mens =A0 =A0 |

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Copper is just NOT that expensive yet. And, don't see any gold.

Hook up wire from the harness. :-) Ed

On May 7, 10:32=A0am, Jim Thompson wrote: > Here it is, broken open, a couple of hidden screws "assisted" by force ;-) >

And don't tell me, the new set picture is MASSIVELY better than the old one even on its best day. Try Craig's list and then dismantle it. RIP JVC. Why didn't you replace it sooner?

G=B2

That's going three pages deep on ebay.

Some have a frame built and installed. Mikek

Full knock-down...

They don't make them like that anymore. ...Jim Thompson

Good grief, you think there's enough timmers in there?

I counted - I saw 115 trimpots on that one board. Damnation!

However, it is a scavengers dream. Lots of well marked VLSI chips on there.

Maybe an astronomy club would want those lenses.

They would be nothing like diffraction limited or monochromatic so the best bet is to donate them to the scouts for fire starting with the sun.

I suspected they might be good for something. ...Jim Thompson

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| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at

Note that there are only two CRT's shown... the third was the failure mechanism... leaking oil ;-) ...Jim Thompson

Glycol based coolant. That was a common failure, and fairly easy to fix.

And optical interface between CRT face and lens... cute! ...Jim Thompson

--

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at

Another problem with it was something growing in the coolant, witch causes it to run hotter, and affecting the focus or having a dim area in that color.

An optically transparent *thermal* interface between the CRT and the coolant heat exchanger.

Too late now. :)

Some people never do any P.M. ;-)

Preventive maintenance on a picture tube?

I tried fixing a TV from the 90's once. I'm sure I could have done it, if it had been the least bit designed for mantenance. The damned back and bottom were molded together, so if you took off the back then it had no bottom (or support for the board, which was left dangling) and it kept threatening to fall back and crack the neck off. I decided it wasn't worth the bother or danger.