#1
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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? |
#2
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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,
__________________
Brian USN RET (Avionics / Cal) CET- Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit! |
#3
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Quote:
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. |
#4
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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 |
#5
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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 |
Audiokarma |
#6
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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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