Sharp 9" Color TV 9H102 AC/DC TV Clicks ON But Tube Not ON

[Jc339]

Hello Everyone,

I'm brand new to this forum.

I'm the original owner of this Sharp Lyntron 9" Color TV 9H102 AC/DC TV. I have the original user guide, DC plug for running the TV from a car battery 12 V.

I purchased this unit in about 1984. It ran great for many years with a nice picture and then the tube and sound wouldn't come on and stopped. I kept it all these years because I didn't want to get rid of it, thinking I might be able to get it working again some day.

Then I found out about this forum and thought I should give it a try.

Please let me know if you can help me get it running. I have a very basic knowledge of electricity. I can use a multi-meter and can check voltages. I can also test diodes and transistors and do basic things like continuity checks.

The symptoms are:

The on/off switch clicks on and off with a distinct click, but the TV tube won't come on (light up) (it appears to stay dark, no snow and no sound through the speaker you typically get when you plug in a CRT TV without an antenna hooked up).

Any idea where I can find the service manual for this TV in case someone asks me to check some wiring? I'm wondering if the schematic diagram is inside on the case. Maybe I should carefully take case off to look, not touching the tube, though...