G07-FBO- no neck glow. Help!

OldTymeToys

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I had Peale work on a 13" G07-FBO for me and just had a chance to put the chassis back in my Pac cabaret this evening. When powered on, I get nothing- no crackle, no hum, no neck glow. I watched the chassis as I powered it up and I didn't notice anything out of the ordinary. I checked the fuse- its good. AC power is present as well. So I thought my next step would be to check the B+ but I'm a little unclear as to where to test it. Bob's schematic isn't so clear and I can't seem to find the test point on the chassis according to the manual.

Peale does great work and is very thorough, so what could I have done to it???!! Help!
 
wiggle the AC connector and see if it powers up, the connector may have stretched on the pins.

Also try taking an AC reading where the power goes into the deflection board to see if the power is getting past the connector.
 
wiggle the AC connector and see if it powers up, the connector may have stretched on the pins.

Also try taking an AC reading where the power goes into the deflection board to see if the power is getting past the connector.

Thanks Dave- I'll try it now...
 
I don't understand how it could have died like that. It was running spot-on when it left. Great picture, perfect B+.

I'd send you a regulator, but I don't currently have one.
 
The only other suggestion I have is examine the PCB for cracks. Who knows what could have happened during transit. How did the box look when you received it?
 
The only other suggestion I have is examine the PCB for cracks. Who knows what could have happened during transit. How did the box look when you received it?

I'll do that. Would there be a B+ reading if there are cracks? I read on Bob's site that it's pretty easy to crack the G07's, so I was pretty careful when I put it back in. The box looked fine and you packed it well. I'm at a loss too. :confused:
 
It would depend on where the cracks are.

Do me a favor - take your meter, set it for Ohms, black lead on the frame, and red lead on the VR outer casing. What's the reading?
 
Well, first, just double check it to make sure something stupid didn't happen during transit, like it getting knocked enough for a leg to short against the frame (which I doubt, but let's go with the simple stuff, first).

Assuming this is not the case, then it'll need to be replaced.

Makes me wonder why it decided to die NOW. It was just fine here.
 
Back in my hands.

What happened to the power connector? It was like that when I had it here before, but it was a pain to hook up. Have you been wire nutting the connection?

Sure enough, I'm getting a B+ of 145VDC. I'll be able to look at it later, more in-depth.
 
Back in my hands.

What happened to the power connector? It was like that when I had it here before, but it was a pain to hook up. Have you been wire nutting the connection?

Sure enough, I'm getting a B+ of 145VDC. I'll be able to look at it later, more in-depth.

Thanks man. Yeah, I cut it and wire nutted it to test it. The connector on my side didn't fit properly and I just wanted to make sure I had solid AC coming in. Keep me updated- thanks again!
 
Just to close this thread- the G07 is back in and working thanks to Peale! Here's his PM to me in case anyone was wondering the final fix :)

Peale said:
I'm not sure if it was X701, or not. I could replace it with the old one, and retest, but....nah!

Basically, I hit a TON of solder joints, and replace a cap that hadn't been replaced before. Okay, TWO caps...I replaced the main filter cap, too, but I replaced it with a newer used one. So, I'm not really counting that one.

But, the b+ is spot on. Perfect picture. When I send it back, and if it's not functional, I'm guessing solder joints were broken in the shipping process. That's the only thing I can think of that could have happened the first time around.

I'm going to let it run, but I do not anticipate any issues on this end.
 
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