kbp810 Posted December 18, 2022 Share Posted December 18, 2022 A local blues player up this way came across an old Zenith Console Radio and snagged it with the hopes of bringing it back to life to use as a harmonica amp. It was non-working condition, as in turning it on instantly blows the fuse. He'd received some advice about maybe just being some bad tubes (and some did actually test bad), so he tried swapping them all out for new modern tubes; unfortunately it would still instantly blow the fuse. That's just about the time I came into the picture - been chatting for a little bit, and met up today to snag the chassis from him to see what the problem might be. Didn't take long to pin point some initial culprits. Just upon a quick visual inspection, there's at least 3 weeping capacitors and at least a couple of toasted resistors. The original plan was to see if it could be saved; but the more I inspect, the more I think this is going to be a gut and start from scratch. There's a lot of the circuit that can be eliminated for the intended purpose anyways. Would keep it point to point construction; and plan to reuse the tube sockets, terminals, transformers, pots (hopefully), and should be able to reuse some of the wirewound resistors within... but most everything else is pretty much at or near it's end of life. At the end, it would essentially be a "new" amp using original and NOS parts (where I can); hiding in an old console cabinet (no pictures of the cabinet at the moment). Phew... just look at that birds nest... 2 Link to comment Share on other sites More sharing options...
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