Sony CCD-TR93 viewfinder goes off

[chris1379]

I'm hoping someone here can help me. When the camcorder is switched
into the camera or player mode, the viewfinder comes on for a few
seconds and then goes off. Actually, the image is still there but the
backlight goes out. It stays on longer when powered by the charger and
won't come on at all with a nearly dead battery. I tried replacing the
board the battery connects to (DC-DC converter?) but nothing changed. I
also know that unplugging the LCD part of the viefinder lets the light
stay on. Any ideas?

Chris

 

[Jumpster Jiver]

I'm hoping someone here can help me. When the camcorder is switched
into the camera or player mode, the viewfinder comes on for a few
seconds and then goes off. Actually, the image is still there but the
backlight goes out. It stays on longer when powered by the charger and
won't come on at all with a nearly dead battery. I tried replacing the
board the battery connects to (DC-DC converter?) but nothing changed. I
also know that unplugging the LCD part of the viefinder lets the light
stay on. Any ideas?

Chris

Sounds like a problem with the backlight inverter or maybe a flaky
ribbon cable leading to the viewfinder area.

 

[chris1379]

The cable looks OK and shows no signs of intermittence. Is the
backlight inverter in the EVF ass'y? What components would work
intermittently like that?

 

[[email protected]]

The cable looks OK and shows no signs of intermittence. Is the
backlight inverter in the EVF ass'y? What components would work
intermittently like that?

Most of the time this is caused by a bad backlight tube. I have some
here if that helps.

-A

mandoline "aat" cwgsy.net