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Old 03-03-2015, 11:24 PM
Tom Albrecht's Avatar
Tom Albrecht Tom Albrecht is offline
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Identify these Zenith parts?

I've got some Zenith replacement parts packets that I'm inclined to pitch unless someone knows what they are:

103-287 diode

103-194 diode

903-190 diode kit

For the above, I'd simply like to know what kind of diodes these are. Rectifiers (PIV, amperage)? Zeners (voltage, wattage)? Varacters?

800-860 4 Lead Capacitor 22-7504-01

The above looks like a big orange drop with 4 leads, and includes a notice that this is a critical safety component. What kind of a gizmo is this?
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Old 03-04-2015, 02:25 PM
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Google gives up:

103-194 7.5V 400mW Zener Diode

103-287 diode 1500V 1A Silicon Diode


My Zenith 1992 price list gives up the following:

903-190 is shown as "diode", last used 1975

800-860 is the universal 4-lead safety cap kit for 17/19/25" CCII (Duramodule)chassis.

Hope this helps,
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Old 03-04-2015, 05:35 PM
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Jon A. Jon A. is offline
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Quote:
Originally Posted by Tom Albrecht View Post
800-860 4 Lead Capacitor 22-7504-01

The above looks like a big orange drop with 4 leads, and includes a notice that this is a critical safety component. What kind of a gizmo is this?
I have two of these.

They're critical all right. Unlike the Chromacolors and early Chromacolor IIs with multiple 2-lead safety caps, the CRT goes bye-bye immediately if a white one opens without opening its safety interlock.
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Old 03-04-2015, 05:57 PM
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IIRC the 103-287 is a damper diode that subs the
103-193 in the upright chassii. I know we used them.....
Dont remember the other diodes.
The 800-860 is a good thing to have.

73 Zeno
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Old 03-04-2015, 06:11 PM
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zeno zeno is offline
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OOPS
The 4 lead cap works like this. 2 leads complete the collector ckt
for the Horz output & the other 2 complete the emitter ckt.
It is designed so if the actual cap opens one of the paths will open
thus killing the HV.
The origional ones were white & made by American Radionics.
They did not work as designed. When the cap opened the HV
would skyrocket & often destroy the set including the CRT
sometimes. There was a huge recall, they paid us $4.50 per
cap & a free cap for years out of warranty when we found them.
That was into the late 80's at least. In warranty was free & if
you had a destroyed set it got fixed no mater how many parts
were needed.

73 Zeno
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Old 03-05-2015, 12:03 AM
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Tom Albrecht Tom Albrecht is offline
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Thank you, gentlemen! That is very helpful. Now I can label the diodes and put them to use at some point.

Not sure what to do with the 800-860 four-lead caps, since I don't expect to be working on any solid state TVs. If anyone wants them, they are available for the cost of shipping (probably a dollar or two).
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