CurtPalme.com Home Theater Forum

UncleWill · Posted: Thu Jul 10, 2014 11:10 pm Post subject: Electrohome 8500 Flickering

Okay, first REAL problem I have ever had with this set. Just happened a few minutes ago during a PlayStation session.

The tubes display at regular brightness, then much less, then back to normal. They actually turned off a few times as well before coming back. This has never happened before.

I do not think it is the cables, but will triple check anyway.

Thoughts? Power supply problems?

**Curt Palme** · Posted: Thu Jul 10, 2014 11:14 pm Post subject:

Before you do anything, do the test patterns do it? All colors?

UncleWill · Posted: Thu Jul 10, 2014 11:50 pm Post subject:

Not sure about the test patterns. I did pull up the main diagnostic screen using the * button to see if they would be affected. They went out too.

UncleWill · Posted: Thu Jul 10, 2014 11:52 pm Post subject:

It seemed like one of the colors would drop out or go to super low brightness. It would come back and do it again in maybe 5-10 second intervals.

The set is running right now with problems...yet.

**Curt Palme** · Posted: Fri Jul 11, 2014 12:51 am Post subject:

Does the picture 'zoom' in when it comes back, or just flash on and off'?

UncleWill · Posted: Fri Jul 11, 2014 5:44 pm Post subject:

Flashed on and off

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

One of your VNB's might be bad. Causing the Spotikill circuit to kick in . If it defocused then it be a HV problem.

Nashou

UncleWill · Posted: Fri Jul 11, 2014 11:26 pm Post subject:

I don't think the focus went out. Any way to diagnose these firsthand? I have a spare set of parts, minus the neck boards and power supplies. Maybe if I caught it on video?

The diagnostics on the back read everything as A-okay.