Noob question, but what is the part in my trinitron?
 

Hello all, I got some caps in for my trinitron so I started replacing them, but I noticed something. On the neck board there are these glass parts with legs that are just corroded away. One even had a broken leg and touching these parts made them fall off. No wonder the crt was messed up (besides the shot caps).

So what are these parts and where do I get some replacements?

They are neon light bulbs. Many TVs use them for spark gaps or something akin to a Zener diode regulator.

They were made in a variety of firing voltages so which you need I can't tell you...They are still in production so you should be able to find them.

Thank you for the answer. I have been trying to find what this tv needs with no luck. Apparently the first model trinitron is very hard to find parts for.

Neons are used as spark gaps. Probably one for each cathode.
If the CRT arks internally it will be taken to ground instead of
hitting the driver transistors & killing them. The common NE-2
probably will fire at to low a voltage. You may have to find an
organ donor. Set will run without them but with risk.

Most newer sets have SG's built into the CRT socket on each pin.
The focus always looks different due to the high voltage on it &
they can cause troubles.
Other SG's are small white blocks ( Sony) or a pair of insulated
wires side by side ( old Zeniths).

73 Zeno:smoke:
LFOD !

If it will run without I may run it some for testing, but I really would hate to remove parts from another trinitron. They're my favorite and in rural Tennessee they're extremely extremely rare. Around here there's a ton of magnavox, RCA, Sears, etc.

The local dump is where I go to snatch up anything usable for parts, so hopefully a massacred doner will show up.

Around here I have a larger 1974 trinitron. Do you think it would have what I need? I was planning on fixing it up but have been getting more and more junk in, plus it has a cataract, making it near worthless around here.

Do you have the Photofacts or other pertinent service literature for the set so that you can look up all the parts & components it uses?

I sure wish I did, but I can't find any schematics on this TV. Seems to be an issue with most of the Tvs I've done work on.

Gotta pay for service lit in the TV hobby. Until sam's goes belly up or the copyrights expire....Or only collect sets old enough for the lit to have expired copyrights...

Don't EVER run a Sony without spark suppressors! Very bad things will happen even without an electrical storm.

The SAMS Photofacts aren't expensive, all things considered. If this is the same model as the one in your other thread, here's the link to the Photofacts for it:

https://www.samswebsite.com/en/photo...earch&s=Search