SB-401

[Jim Schnurr]

I have an SB-401 that has been working perfectly. It recently decided that after about an hour it would suddenly key itself up. I replaced the 6D10 , 6EA8, 6AV11 and 6J11 with new stock I had on hand. It still does the same thing after about an hour warmup. I wonder if anyone else has experienced the same problem. It is probably a component that is getting hot in the vox-keying circuit. Any suggestions.  ?

Tnx, Jim 




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