Yet another Zenith To identify

[sampson159]

looks like the system 3 set i have.inline crt and that terrible tuner!mine has some bad contacts and drifts.crt is excellent and makes a beautiful picture.also has zoom,which i have no reason to use.very good set and right up there with the chromacolor chassis for reliability

[Dreamsbeard]

Originally Posted by sampson159

looks like the system 3 set i have.inline crt and that terrible tuner!mine has some bad contacts and drifts.crt is excellent and makes a beautiful picture.also has zoom,which i have no reason to use.very good set and right up there with the chromacolor chassis for reliability

From the look of it, it seems we have the same tuner problem, the thing drifts like hell to the point that its imposible to watch something if the AFT function is not turned on.

Oh and by the way could a moderator change the title of the thread to "identify" instead of "identified"...it makes my eyes bleed haha

Update :

I plugged the CRT tester to it and yep, the CRT pings my B & K at 1.1 on the scale for all the guns so its in the good section, so not a problem. But the TV has a few problems and here they are;

- I have to put brightness and contrast all the way up to get a bright enough picture.
- Even with the sound swith all the way down I get a buzzing sound from the speaker and moving up and down gives a really jerky sound. (could it mean that the speaker is busted?)
- I get intermitent flickers on the screen.

I cleaned all the pots and switches on the front hopping it would solve most of the issues, but if anything it made it worst (at least for the sound) and not much else changed.

Also is the pot labeled "Brightness Limiter" at the back of the TV the same as adjusting the G2 voltage on a more modern flyback? If its the case, it is also maxed out.

What do you guys think?

Thanks!

[Electronic M]

Originally Posted by Dreamsbeard

Oh and by the way could a moderator change the title of the thread to "identify" instead of "identified"...it makes my eyes bleed haha

Thanks!

Your eyes should stop bleeding soon....If not see a doctor.

[Dreamsbeard]

Originally Posted by Electronic M

Your eyes should stop bleeding soon....If not see a doctor.

Haha, they stopped bleeding thanks!

So, as everyone suggested I removed the 9-88 module and the sound module, cleaned contact and put back in place, and I must have done somenthing right because now, I have absolutly no sound Haha. I checked the speaker and its got 14.6 ohms across with the wires unpluged from the module, which I guess is good? What would be the easiest way to check if the module is bad, mesure voltage at the speaker lead?

As for the low brightness I have a theory : could it be that the seperate guns adjustments are too low? The TV has a perfect grayscale, but pots are maybe 25% up, red a little lower.

jstout66, I just might take you up on that offer! Let me run some more test and we'll see what modules might be the culprints, and I might just ask you for those!

BTW I use Nu-Trol from Mg chemicals to clean contacts. It might not be as good as deoxit, but it cost about half the price and usually do the job.