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-   -   i cant believe it! (http://www.videokarma.org/showthread.php?t=256301)

sampson159 10-28-2012 04:22 PM

i cant believe it!
 
picked up a zenith metal cabinet remote set with a vertical chassis at a moving sale today.swivel stand and the hand unit.manufactured in may 1977.what is amazing is that,it is dead!not a whimper out of it!i have never seen one that didnt do something.no breaker tripping,no buzzing,nothing!have never seen this in all my years.i bought it for a parts set but now i am curious.shaking my head in disbelief!

Sandy G 10-28-2012 04:41 PM

MOST Un-Zenith-like...

compucat 10-28-2012 05:42 PM

Quote:

Originally Posted by Sandy G (Post 3052601)
MOST Un-Zenith-like...

I bought a 1972 or thereabouts 12" black and white Zenith that is completely dead like that. No tubes light or anything. That is very unlike a Zenith. I have not tried to find out what is wrong with it.

radiotvnut 10-28-2012 06:11 PM

At first, I thought you were going to tell us that you found a flat chassis SS Zenith. Still, what you found is well worth owning and I hope you get it fixed. On those sets, I've seen issues with the remote power supply chassis that would keep them from powering up. I think some of those had a remote/manual switch that may be dirty or in the wrong position.

sampson159 10-28-2012 09:41 PM

wish it was a flat chassis with a 25v crt.i have another identical set with no high voltage.can take 2 and make one?one has a green lable crt and the other a purple label.not sure what the difference is.

radiotvnut 10-28-2012 10:19 PM

A year or so ago, I fixed a CCII with not HV and it had an open horizontal driver transformer. There's also a big power resistor on the flat part of the chassis that will open and kill B+ to the horizontal output circuit. I've also seen defective horizontal oscillator modules kill the HV, as well as the cap/resistor in the HOT emitter circuit. Last; but, not least, the HV triplers were high failure parts in these sets.

sampson159 10-28-2012 10:47 PM

this set doesnt have any voltage anywhere!breaker not tripping,no indication of anything.i have never seen a completely dead zenith.i have seen these sets trip breakers,tuners light,something.i will pull off the back sometime this week if we dont have a power outage.there is a switch in the front panel that is marked main off/on.i will check voltage there first.my other set has no high voltage.both fuses blown and looks like a cap behind the flyback is swollen.owner said it did work but had a slight vertical issue.not enough to fill the screen when cold.after it played for hours it would expand and almost fill out the screen.i put it away until i got a parts set.any idea on the picture tube label?my 25v chromacolor has a purple label 25vdmp22.it has a fantastic picture!

sampson159 10-30-2012 07:44 PM

4 Attachment(s)
i got it working!baffled me but for some stange reason,the wires on the on/off switch came loose and the set wouldnt power up.i resoldered and it still didnt power up.exchanged the on/manual switch and the same result.found a blown fuse in the remote module.replaced and bam!set powered up with a dim,blurry picture.looked like a bad crt.after 15 minutes,the crt came to life.working well but then a flickering and now it has a loss of contrast.i turned up the agc and it has a very good picture for now.the contrast control doesnt work very much and its backwards.it was working properly when i first powered up.now it has a slight range and again,it is backwards.convergence is so-so with room for improvement.glad crt came up.now to fix the damn contrast issue!windy,wet and very cold today.had to abandon the set in the garage.here are some screen shots

sampson159 10-31-2012 04:59 PM

update-turned it on this morning.set played flawlessly for 5 hours straight.contrast worked properly and overall very satisfied with this set.remote is operating as it should.crossing my fingers and hoping it will give another 35 years of service!

MK1234Tfan 10-31-2012 10:34 PM

Holy cow that's a great picture! I bet emissions are great on that thing!

sampson159 10-31-2012 10:48 PM

it looks pretty good but the crt didnt test all that well.it was even with all 3 guns at 7.5.in the green but barely.i have an identical set with an outstanding crt.may swap out the chassis.i also need a zenith crt for my hybrid console.it has a sylvania rebuilt crt with severe cataract.it will pop off easily without any heat.that crt is extremely good but i like a zenith to be all zenith.


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