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Post by Night Ranger on Aug 2, 2014 14:01:56 GMT -5
Does anyone know to disolve alignment coil cement on Panasonic chassis tube rigs? I have the service manual, and I need to give my Robyn T-123B an alignment, but I don't want to make the mistake the previous owner made when he shattered one of the slugs. I found a post on another page where someone damaged the wires in the transformer trying to force the cement. I'd rather avoid those mistakes if possible. Is there a way to dissolve the cement on the old Robyn T-123b? It is definitely not wax.
Thanks,
Night Ranger
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Sandbagger
Administrator/The Boss 
Posts: 6,247 
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Post by Sandbagger on Aug 2, 2014 20:20:55 GMT -5
Does anyone know to disolve alignment coil cement on Panasonic chassis tube rigs? I have the service manual, and I need to give my Robyn T-123B an alignment, but I don't want to make the mistake the previous owner made when he shattered one of the slugs. I found a post on another page where someone damaged the wires in the transformer trying to force the cement. I'd rather avoid those mistakes if possible. Is there a way to dissolve the cement on the old Robyn T-123b? It is definitely not wax. Thanks, Night Ranger I've always just used the tip of my soldering iron to heat up the slug and soften the glue. Be careful not to overheat the slug and melt the coil form. |
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Post by Night Ranger on Aug 2, 2014 21:46:46 GMT -5
Does anyone know to disolve alignment coil cement on Panasonic chassis tube rigs? I have the service manual, and I need to give my Robyn T-123B an alignment, but I don't want to make the mistake the previous owner made when he shattered one of the slugs. I found a post on another page where someone damaged the wires in the transformer trying to force the cement. I'd rather avoid those mistakes if possible. Is there a way to dissolve the cement on the old Robyn T-123b? It is definitely not wax. Thanks, Night Ranger I've always just used the tip of my soldering iron to heat up the slug and soften the glue. Be careful not to overheat the slug and melt the coil form. I did not realize the white glue/cement on the Panasonic chassis slugs was heat sensitive. It just looks like hardened cement. I've definitely used my soldering iron to loosen up the wax on slugs before. Thanks, -Night Ranger |
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Post by 2600 on Aug 2, 2014 23:43:31 GMT -5
It's not glue. It's some sort of alkyd enamel paint. Every solvent I can get these days dissolves the plastic coil form before the white paint softens.
Used to use Freon TF for that back in the day. Didn't attack plastic. Can't get that any more.
Makes me wonder if any of the nasty-smelling paint-remover stuff might soften it. Still gotta suspect that "Strip-Eze" or "Homer Formby's" would be hard on the plastic coil forms. Just getting a small dose delivered where it's needed would be tricky. A hypodermic needle, maybe?
73
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Post by tecnicoloco2000 on Feb 10, 2015 20:54:03 GMT -5
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Sandbagger
Administrator/The Boss
Posts: 6,247
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Post by Sandbagger on Feb 11, 2015 7:09:40 GMT -5
That's the stuff. No longer produced (Damn EPA!), which is why it's priced so high. Hmmmmm, I still have an unused can of R-12 in the garage. I wonder what I could sell that for...... |
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Post by tecnicoloco2000 on Feb 12, 2015 0:26:10 GMT -5
Thanks for the reply,now I know what to look for  I have 4 panasonic chassis rigs that need some work and alignment  |
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Post by BBB on Feb 12, 2015 11:44:03 GMT -5
Dang... close to $50 a can but if it works I'd try it. |
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Post by 2600 on Feb 17, 2015 1:28:38 GMT -5
Toluene is a dern sight cheaper. A drop onto the gunk will do the job, just add another drop as the first one evaporates until you can move the slug.
Don't overdo it. If the glue that holds the coil form to the base is softened, the entire coil form will spin inside the can and sever the wires.
Just have your signal generator already set up with a weak signal so you can tweak the slug as soon as it moves freely. Unless you remove the slug entirely and clean off all the enamel, it will glue itself back in place when the rest of the toluene evaporates. Easier to loosen, tweak and move on to the next slug than it is to remove and clean out all the sticky gunk.
And if you twist just a little too hard as the stuff is hardening, you'll hear the wires make a soft 'snap' when the coil form breaks free from the base insulator and spins, breaking the tiny wires inside.
And I could be remembering the wrong flavor of freon. I know "TF" was used for switches with soft plastic insulation. Could be that it isn't the one for softening the enamel.
Been too long. Don't spend that kind of money when you can still get toluene from a hardware store. I KNOW that stuff works.
Sure does a good job of loosening the glue between the coil form and the base insulator.
73
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