Why no love for this GE roundie ?

[tvcollector]

Parts are about to arrive soon.. I've got a few questions before I attempt all this:

I have a 50volt 0.47 electrolytic cap somewhere I'll have to dig up.. Will this work ?
How do I connect the cap? poz and neg leads from tester or in series on the red lead?

[Findm-Keepm]

Originally Posted by tvcollector

Parts are about to arrive soon.. I've got a few questions before I attempt all this:

I have a 50volt 0.47 electrolytic cap somewhere I'll have to dig up.. Will this work ?
How do I connect the cap? poz and neg leads from tester or in series on the red lead?

No, use a film cap across the meter terminals - a .47uF at 600V is sufficient. If you need one, I can probably find one this evening and get it in the mail to you.

[tvcollector]

Ya.. I don't have film cap...That would be really nice of you to do that...

[Findm-Keepm]

Originally Posted by tvcollector

Ya.. I don't have film cap...That would be really nice of you to do that...

I'll get one in the mail.

Meanwhile, a repair article discussing the cathode current and horizontal output stage in a tube set:

http://www.americanradiohistory.com/...-Page-0084.pdf

Why do you bypass the meter? The inductance of the meter can affect some Horizontal Output stages, causing failures in other areas.

http://www.americanradiohistory.com/...-Page-0061.pdf

Cheers,

[Electronic M]

Originally Posted by tvcollector

Parts are about to arrive soon.. I've got a few questions before I attempt all this:
How do I connect the cap? poz and neg leads from tester or in series on the red lead?

You connect the cap in parallel with the meter leads. And since you are (and should be) doing this with a film cap don't worry about polarity of the capacitor (since film caps are non-polarized) .

[tvcollector]

Thank you both for the info.. I'll let you know the results once do the adjusting and measuring.. According to the Sams, the current must not exceed over 215ma..

[dieseljeep]

Originally Posted by tvcollector

Thank you both for the info.. I'll let you know the results once do the adjusting and measuring.. According to the Sams, the current must not exceed over 215ma..

I'm trying to remember, if the set uses the 6HF5 or the 6JS6. I know some GE's used it, as well as some Zenith's.

[Findm-Keepm]

Originally Posted by dieseljeep

I'm trying to remember, if the set uses the 6HF5 or the 6JS6. I know some GE's used it, as well as some Zenith's.

Yes to both. The 6JS6A is a replacement for the 6HF5. IIRC, GE marked them as such.

Cheers,

[tvcollector]

I just got my HV probe, I turned the set on and probed under rubber cup and the needle of the HV probe only went up a digit before the 10 mark on the meter.. Meter shows a red line in between 20 and 30, I think where the needle should be.. Not sure if the meter is reading correctly..

[DaveWM]

try it on a working set...

see if reads correct then....

If not then the meter is prob not right.....

[tvcollector]

I tried it in another working set, and the needle is bouncing around, though in the higher digits.. Even got a slight jolt of static electricity while sliding the on switch on the probe..

[DaveWM]

Originally Posted by tvcollector

I tried it in another working set, and the needle is bouncing around, though in the higher digits.. Even got a slight jolt of static electricity while sliding the on switch on the probe..

did you attach the ground lead to the chassis?
are you sure you are getting it on the anode and not arcing under the cap?

[tvcollector]

I didn't attach the ground to chassis.. I wasn't sure if that was for just discharging a crt.. I hear a zapping noise when I do that, but it looks to be touching the metal anode under the cap.. It's also touching the lead from the flyback and it looks to be effecting the reading too..

[DaveWM]

attach the ground clip before you hurt yourself.

[tvcollector]

Ok, that worked better.. Even though this thing came in it's original box and paperwork, there is no instructions.. I got 20 on a working set, and almost 2 digits below 20 on the GE set.. Slightly lower..