This obvious mid 50s set was sitting under my bench for a while and is quite a pandora's box. For the longest time, I could not figure out how to get it open.
I was looking at several collections like TV History and cannot find out what model this is. The chassis is stamped 333Z, which means chassis # 120333Z in Emersonese. Sams index lists set 299 (PCB 322), which I don't own. The 299 Sams is a series wired console, so thats not right.
The original 14HP4 is a 70 degree type and tested well into good range, then the needle started dropping back, which is odd.
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Several tubes were bad. Open heaters on 12D4 and 25DN6, shorts on a 12BY7 and 3CB6. Now for a look underneath.
Only one selenium so its not a doubler supply, hence it runs on DC also, but 120volts for the tube heaters will only give 120 volts B+, that's not much.
On AC the B+ would be more like 140, all the electrolytics are rated for 150 WV.
I plan to replace the selenium and bring it up on the variac.
I see alot of crummy caps but I want to see a raster before diving in here.
