|
|
|
#32
07-01-2014, 05:37 PM
|
||||
|
||||
|
Quote:
But the height it too tall now and the picture has a hourglass shape to it now. Other then that I watched a 2 hour movie on it when I first got it home and its very watchable. and steady. I noted the million foot long screwdriver was needed to get at the height. Any idea how set the picture? I don't want to mess up your good work. 
Last edited by Coshi; 07-01-2014 at 05:44 PM. Reason: Frogot to put the picture on 
|
|
#33
07-02-2014, 05:56 AM
|
||||
|
||||
|
Honestly I don't remember where the height control of the set even is. I set it up on an indian head test pattern after I got the yoke done, and it looked pretty good.
If the height control needs a super long screwdriver, you may need to pick one up or borrow one, I'm assuming that the control can't be reached safely otherwise. But I'm guessing that you need to dial the vertical linearity back in slightly, as the stretching appears to be at the top. I'd go with that first. Linearity, then height. A couple screwdriver turns will bring that in. With screwdriver pots, you're not going to really mess anything up. Just turn the pot slowly and note the change on the screen. I've found the most effective way of doing it is with a mirror in front of the set, so you can see what you're actually doing. Post a picture of an actual image on the screen, as in a screen shot. From your crosshatch shot, it really doesn't look bad. Most of what you're seeing probably won't even appear on normal programming. Crosshatch is mostly used for color TV convergence. The question is, how does the picture look?
__________________
"Restoring a tube TV is like going to war. A color one is like a land war in Asia."
|
|
#34
07-02-2014, 02:53 PM
|
||||
|
||||
|
For extra long screwdriver make it out of a knitting needle.
Xlite used to make a foot long that worked great on Zeniths. Also made 2 foot 1/4 inch & the next size ( yellow handle) with magnets & a 2 foot phillips for the Jap sets. Watch for them on TV shop clean outs. I still have them but you will have to pull them out of my cold dead hands.......... 73 Zeno 
|
|
#35
07-02-2014, 03:26 PM
|
||||
|
||||
|
One thing I have done in a pinch, is to slip some nylon tubing similar to aquarium hose over the shafts of the controls, leaving it long enough to reach the back of the set and twist that. Then it can be as long as it needs to be and you don't need to constantly line up screwdrivers. Make sure you wait for the TV to be really warm (on for greater than half an hour) before attempting this adjustment or you will be doing it over and over again. Also, if your line voltage is really 137V, there is a problem with your wiring (probably a loose neutral), and you should get that fixed right away. 137V is way too high. If you actually meant 127V, then I guess it's within tolerance but still not so good.
Some TV sets have multiple taps on the power transformer for high and low line voltage - if yours is so equipped make sure it's set to the 125V tap.
|
| Audiokarma |
|
#37
07-02-2014, 07:25 PM
|
||||
|
||||
|
All the controls are on the front so its very easy to look at the screen,
Also the voltage checked again, It is now 131 But at night its 137. And around 2pm it hits 124. I gust got a new screwdriver i'm gonna watch some honeymooners before i adjust the leanarty.
|
|
#38
07-02-2014, 08:02 PM
|
||||
|
||||
|
137 volts is totally unacceptable - try a second meter to make sure it's true and it isn't just your meter reading high. That's enough voltage to shorten the life of everything electrical in your house not to mention jack up the power bill. The relationship between voltage and expected life of things like tubes is not linear, you will get a much shorter life with such an out of spec voltage.
|
|
#40
07-02-2014, 08:32 PM
|
|||
|
|||
|
Quote:
I sure would not run that vintage set any more until the line voltage is within spec.
|
| Audiokarma |
 |
|
|
Linear Mode
