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 Post subject: Re: Zenith Chromacolor II (chassis 25EC58) going wacko
PostPosted: Sep Sun 10, 2017 4:11 pm 
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Location: The Old Dominion 23518
22-5001s on the flyback, 3 under the chassis - you WANT the orange drop types, not the white ceramic cased ones. They are the two on the left in the photo:
Attachment:
22-5001.jpg
22-5001.jpg [ 117.15 KiB | Viewed 105 times ]

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Brian
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 Post subject: Re: Zenith Chromacolor II (chassis 25EC58) going wacko
PostPosted: Sep Wed 13, 2017 2:54 am 
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Joined: Jun Thu 29, 2017 2:00 am
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Location: Seattle
zeno wrote:
IIRC there are 2 on the flyback itself & 3 more UNDER the HV area
hand wired in. There are NONE on modules.
Sounds like at least a few were changed.

73 Zeno 8)
LFOD !


Sorry, I meant under the modules. Like when you open up the base and there's some rectanges where the modules are on the flip side. The caps I mentioned ARE hand wired. I'll look again to see if I can find any I missed under the HV area. If you're sure they're all under HV area then I think I already found at least one.


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 Post subject: Re: Zenith Chromacolor II (chassis 25EC58) going wacko
PostPosted: Sep Wed 13, 2017 3:05 am 
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Location: Seattle
(Sorry for double post)

I want to mention that I've already found the two safety caps on the top of the chassis by the FBT, and I found two 22-5001 caps on ebay. One of them, however, is black instead of orange, but is still labeled 22-5001, and is still a drop type and not a cylinder type. Is there a difference?


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 Post subject: Re: Zenith Chromacolor II (chassis 25EC58) going wacko
PostPosted: Sep Wed 13, 2017 3:06 pm 
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Location: Pewaukee, WI
Is it black from dirt or black from burning up? If it is just dirt that can be cleaned off and then it could be usable (though obviously a used part and somewhat suspect). If it is clean and blackened walk away I've never heard of them being made in black so if it turned that color something is wrong.


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 Post subject: Re: Zenith Chromacolor II (chassis 25EC58) going wacko
PostPosted: Sep Wed 13, 2017 3:32 pm 
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Joined: Sep Tue 30, 2014 6:08 am
Posts: 1811
Location: The Old Dominion 23518
jacknewton_selftest wrote:
(Sorry for double post)

I want to mention that I've already found the two safety caps on the top of the chassis by the FBT, and I found two 22-5001 caps on ebay. One of them, however, is black instead of orange, but is still labeled 22-5001, and is still a drop type and not a cylinder type. Is there a difference?


Those are the ITW Paktron types, not recommended. I have one, got it from somewhere. The problem with the ITW Paktron stuff is the caps weren't pulse rated. "something " Associates packaged up regular ITW Paktron mylar caps and sold them as 22-5001s - Note the the "Equivalent" statement.
Zenith issued a note about them being dangerous to use. It is after all a "critical component" as all would agree.
Attachment:
225001.jpg
225001.jpg [ 83.46 KiB | Viewed 60 times ]


Stick with the Orange Drops - not hard to find, as there were TONS made. BTW, genuine ones are usually less.

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Brian
"Capacitor Cosmetologist since 1979"
USN Retired (Avionics)


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 Post subject: Re: Zenith Chromacolor II (chassis 25EC58) going wacko
PostPosted: Sep Wed 13, 2017 3:43 pm 
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Joined: Sep Tue 30, 2014 6:08 am
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Location: The Old Dominion 23518
CDE seems to have dropped the .0018uf 1600V in the pulse-rated 715P series, the old standby:

http://www.mouser.com/search/refine.asp ... =156732321

:( :(

But...here's a deal I'd pop for (no affiliation, not mine, YMMV): http://www.ebay.com/itm/70-Pcs-SPRAQUE- ... SwYGFUwYJ0

Note the 10 .0018uf 1600V orange drops - 5 to use, and 5 to spare....

Use only .0018uf 1600V 715P Sprague or the 22-5001 - that value is critical. IIRC, the 5 needed are to both handle the pulse current and to provide a safety margin should one open up.

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Brian
"Capacitor Cosmetologist since 1979"
USN Retired (Avionics)


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