Sony kv-1913 SCC-265B-A trinitron manual or help

[Sealtest]

Got a couple of the parts in and now have a question. The NTE36 transistor that is on the heatsink (labeled Reg out) does not have a mica insulator between it and the heatsink. Did it ever have one? I don't remember one and I don't know how to tell if it should have one or not. It not having one would be an explanation of how the original accidental short blew those parts (bridging the AC line with the chassis, sending the AC through the REG out).

So is it missing an insulator or is it supposed to not have one?

[zeno]

Collector goes to ground anyways so no mica needed. Wouldnt
hurt to put some owl shit on it.

73 Zeno
LFOD !

[Electronic M]

Originally Posted by zeno

Wouldnt hurt to put some owl shit on it.

73 Zeno
LFOD !

Took me a couple of moments to realize you were talking about thermal paste.
If you need to put some on a Zenith you should call it Sumuf shit...Some of the Zenith kits came with blue heatsink compound.

[zeno]

Originally Posted by Electronic M

Took me a couple of moments to realize you were talking about thermal paste.
If you need to put some on a Zenith you should call it Sumuf shit...Some of the Zenith kits came with blue heatsink compound.

It was said in the olden days the clear stuff was best for clean-up but worst
for conduction.
White was next & it had another name I will let you guess
Pink next.
Blue was said to be best for heat conduction.
Once at a NAP seminar IIRC the C3 POS chassis was blowing vert IC's.
After mods they gave us a Zenith part # for a transistor & told us
"throw away the transistor & use the blue compound on the IC."
When asked why NAP didnt include it we were met with silence......
You will find blue or pink compound in many Zenith 800-### kits.

73 Zeno
LFOD !

[zeno]

Turn color all the way down. If still there adjust the H-Stat
control. Its on a block with the anode lead.


73 Zeno
LFOD !

[Sealtest]

Adjusting the controls kinda helped, but the colorful static is probably because of the really bad convergence (I struggled real bad setting this set and have certainly bumped the rings around the CRT a time or two).

Here is the best picture I could get of the set when hooked up to a Sencore VA62. The Sencore has proven to be an unreliable unit with a ton of problems so the patterns it puts out flash and are warped. I will have to pull out a Sencore VA48 or Heathkit IG-28 after some cleaning.

Hopefully this thing doesn't blow up..

[dieseljeep]

Originally Posted by Sealtest

Got a couple of the parts in and now have a question. The NTE36 transistor that is on the heatsink (labeled Reg out) does not have a mica insulator between it and the heatsink. Did it ever have one? I don't remember one and I don't know how to tell if it should have one or not. It not having one would be an explanation of how the original accidental short blew those parts (bridging the AC line with the chassis, sending the AC through the REG out).

So is it missing an insulator or is it supposed to not have one?

That's why all my receptacles are GFCI.
It could easily prevent a mishap like this. When I first started using them, I bumped a chassis with a grounded cable TV coax and it tripped instantly, no damage to the set. It happened a few times.
Also, none of my test equipment is grounded. I use those 3 to 2 prong adaptors on the equipment that has grounding plugs.
AC/DC sets, an isolation transformer.