What to do on used sets?

[zeno]

Originally Posted by Retro in RI

Ok. I spent a good deal of time studying this thing with it face down on my living room floor.(Padding underneath) I found the hoz output and heat sink but no large cap beneath. By cap I'm assuming a cilyndrical object (shaped like, but not neccessarily the size of, a roll of coins) with wires at each end (sorry, new b here)
I saw nothing like that. But i did see the small white caps marked 22-5001. There were at least five in and around the areas you mentioned. Where can I get these? Just unsolder and solder in new ones? How much should I pay? Any part/reference number I should ask for. What problem will replacement of these prevent?

Btw, the inside of the 63 looks way less intimidating. : o

Thanks again.

Al

+
They need to be changed, but they are not the one that can
destroy the set. Every one that goes bad causes the HV to go up by
1KV-2KV. Symptoms I remember are pix not wide enuf & foldover.
You may also get arcing at the HV tripler ( big red wire comes out
of it) focus pin at pix tube (CRT) socket & HV connector to CRT bell.
All in all they cause great stress to the horz & HV components.
Best bet is to find OEM replacements. You MUST use the right ones
or they will burn up fast. If you cant find OEM there is a capacitor
expert here but I dont remember his name.
Someone will pipe in & help you with your search.

73 Zeno

[Retro in RI]

OK, thanks.

When searching for new ones, should I search by application, or is there a number on the old caps to use?

Al

[Electronic M]

I think those caps can be replaced with orange drops (IIRC I've seen it) or film caps of the same capacitance and the same or higher voltage rating...unless there was some special additional component baked in that I'm not aware of.

[zeno]

Originally Posted by Electronic M

I think those caps can be replaced with orange drops (IIRC I've seen it) or film caps of the same capacitance and the same or higher voltage rating...unless there was some special additional component baked in that I'm not aware of.

Yes NOS OEM caps are orange drop type with the same 22-5001
part ## made by Sprague IIRC. If you dont find them we gotta
find that cap expert for a good sub.

73 Zeno

[Retro in RI]

Originally Posted by zeno

Yes NOS OEM caps are orange drop type with the same 22-5001
part ## made by Sprague IIRC. If you dont find them we gotta
find that cap expert for a good sub.

73 Zeno

Thanks for walking me through the learning curve here. If I can't find em, maybe I'll start a thread about the caps.

Al

[dieseljeep]

Originally Posted by zeno

Yes NOS OEM caps are orange drop type with the same 22-5001
part ## made by Sprague IIRC. If you dont find them we gotta
find that cap expert for a good sub.

73 Zeno

Weren't they some kind of a real precise value or tolerance. I don't remember them having a value on them, just a part number.
Also, didn't some sets have a different amount of them, like some sets had three, some had four. It was dependent on the flyback characteristics.

[zeno]

Originally Posted by dieseljeep

Weren't they some kind of a real precise value or tolerance. I don't remember them having a value on them, just a part number.
Also, didn't some sets have a different amount of them, like some sets had three, some had four. It was dependent on the flyback characteristics.

IIRC the 22-5001 was an odd value like .0185 or something.
The 4-lead value would have been times the number of them.
I think some sets had 4 & some 5 but not sure, been to long.
There were at least 3 different 4 lead caps during the Chromacolor 2
era. The very common one, the 13GC10 + and the EFL high angle
CRT sets starting from H line.
Other brands used them also. Magie had the same problem with
CRT necks getting sawed off but it never got publicity. I saw
2 of them. Had the customers bring them to a Magie ASC.
Also Sears/Warwick, Admiral & probably other I dont remember.

73 Zeno

[DavGoodlin]

The 4-lead cap in the Magnavox had number 250663-XX, where XX was a different number depending on the value.

IIRC GE and RCA also had single capacitors in the sets from the 80s

Zenith made it much easier by using one cap, with several in parallel as needed.
I have a NOS Zenith 22-5001 and will check its value with my Fluke to see what it is.

The reading on both the orange drop and ceramic tube, both 22-5001, was .002 mF (or 2 nF)
The working voltage is probably 1600 volts or higher

[Retro in RI]

Originally Posted by DavGoodlin

The 4-lead cap in the Magnavox had number 250663-XX, where XX was a different number depending on the value.

IIRC GE and RCA also had single capacitors in the sets from the 80s

Zenith made it much easier by using one cap, with several in parallel as needed.
I have a NOS Zenith 22-5001 and will check its value with my Fluke to see what it is.

Thanks. I did a little poking around and haven't come up with any yet. Any info to simplify my search would be cool. Thanks.

Al

[zeno]

Originally Posted by DavGoodlin

The 4-lead cap in the Magnavox had number 250663-XX, where XX was a different number depending on the value.

IIRC GE and RCA also had single capacitors in the sets from the 80s

Zenith made it much easier by using one cap, with several in parallel as needed.
I have a NOS Zenith 22-5001 and will check its value with my Fluke to see what it is.

Yup. GE's were famous for there cap opening. Usually just blew the HOT
& the rectifires on the vert board sometimes. You could take a
working one & pull on it & it would come apart. We changed them
all if not updated. Maggie was a big long time user of 4 lead caps
I think up to the C-1 chassis there best set IMHO. Zenith used them through the 9-160 era at least. I think more would have used them
if not for the early problems Zenith had with the American Radionics
ones, I would have steered clear to !
Well its always fun talking shop..........

73 Zeno

[zeno]

Originally Posted by Retro in RI

Thanks. I did a little poking around and haven't come up with any yet. Any info to simplify my search would be cool. Thanks.

Al

Post a "wanted to buy 5) zenith 22-5001" hear under classified
for starters. I bet they are getting scarce, its been years since
they were used. 4 yrs ago we probably tossed out a mess of
them when the shop closed, nobody wanted old stuff then.
And IF there is an old (25 years+) REAL TV shop still in your area check
with them. They would love to get something for old parts.

73 Zeno

[Retro in RI]

Great idea. Will do. Thanks.

Al