04-01-2018, 10:26 PM
I started the notebook on this one today. Details of bandswitch wiring etc. etc. Also checked all windings on the power transformer which test fine with the ohm meter. Then on to testing a few resistors - quite a few of which seem to be 50's or 60s replacement "Allen Bradley" style composition types, and they have gone high/bad.
As to wiring, the stranded stuff seems all to be cloth over rubber, and the solid core is rubber covered. The rubber is hard and cracking up in many places, but at least has retained it's colour. The cloth stuff, after 70+ years bears no resemblence to the shades called out on the service info, and has frayed badly.
Onto a little work. The set has a large loop antenna, and I decided at least to replace the wires that lead to it - a delivery of cloth covered wire arrived this week. This was a test case, as these two wires were attached to the bandswitch in a very tricky location. With a little fiddling, the job was done.
More note taking and checking to come. I do need to order some resistors as well.
Cheers
Ed
As to wiring, the stranded stuff seems all to be cloth over rubber, and the solid core is rubber covered. The rubber is hard and cracking up in many places, but at least has retained it's colour. The cloth stuff, after 70+ years bears no resemblence to the shades called out on the service info, and has frayed badly.
Onto a little work. The set has a large loop antenna, and I decided at least to replace the wires that lead to it - a delivery of cloth covered wire arrived this week. This was a test case, as these two wires were attached to the bandswitch in a very tricky location. With a little fiddling, the job was done.
More note taking and checking to come. I do need to order some resistors as well.
Cheers
Ed
I don't hold with furniture that talks.
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