1966 motorola 23 inch color

[timmy]

i have this motorola color and it works fine since i got it done but it always had little red streaks of red on the edges of whites. i have not figured out why or how to get rid of it. all the other colors are fine just the white. any ideas anyone? if i post a pic it may not be seen.

[ctc17]

Does it go away when you turn the color down?
If so good chance its the crt. How are the emissions at 5 volts? If the emissions show good at 6.3volts but sharply drop off as you lower the voltage to 5 I would be looking at the crt.
Red bleed and smearing are one of the signs of a tired crt.

[timmy]

with the color down the last i tried it still was there. ill have to try the crt test at 5 volts.

[ctc17]

Color down = convergence?
Yea always test down to 5 volts. A usable crt will show good at 6.3, a strong crt with good life left will show good down to 5 or lower

[timmy]

i did have a hard time converging this set as its alittle different then the rcas and i have tried to get that red smear out when i converged it but no good. so it could still be a crt issue?

[ctc17]

Not if its doing it with the color off. Unless itts a crappy rebuild and it won't converge right.

[zenithfan1]

I agree, looks like a convergence issue.

[timmy]

hmmmmm,

[ctc17]

Originally Posted by timmy

hmmmmm,

Give me the model number, I have a load of motorola factory service data and it may have better instructions on the convergence. Sams are 'quick and dirty' when it comes to detailed stuff.

[timmy]

its a 1966 908 chassis with the converge adjustments in front, i dont like this setup. the sams states to use the bar gen and then make the final adustments in the front as well as the 2 drives in the rear to get the best black and white pic.

[reeferman]

I worked on a lot of 23" Motorolas and they sets were notorious for having bad tube sockets, especially the ones along the rear of the chassis (demods I believe). Tap (all) the tubes with the handle end of a nut driver and see what happens. Hopefully nothing. Let us know.

[DavGoodlin]

I believe a Motorola Guru by the name of Forest H Belt wrote a book on servicing Motorola's. It was a Tab Books (now McGraw Hill) and no doubt out of print.

My $.02: If you turn down the contrast or brightness and the schmear goes away, the CRT may need a "kid-gloves" belt with your CRT tester.

Is this CRT a 23EGP22?

[timmy]

yes its the 23egp22 and was rebuilt in 1982. KIDS - GLOVES, ? booster ???

[mstaton]

kid gloves= gently, lightly. he means use the lowest restore setting on your CRT tester and zap it. usually the "clean" function.

[timmy]

Originally Posted by mstaton

kid gloves= gently, lightly. he means use the lowest restore setting on your CRT tester and zap it. usually the "clean" function.

hmmmmm, even if it shows good already????????????? what do you think dan?