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Uber tuber switch

Started by okeephoss, July 15, 2021, 10:21:58 PM

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okeephoss



Is it okay to wire the switch like this? 


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Zerro

It is depending on function - generally, the longer wires, the more opportunities of parasite inductions. Between those wires, and between wires and energies all around. You must hear it, if everything is ok.
"Nudíte se? Kupte si našeho cvičeného ježka! Pobaví vás svými veselýmí kousky!"

okeephoss

got the switch wired right...
I thought I got a bad tube tube though... both plates are at 16.5v w both 500k trimmers set at least the lowest. 
Cut and saturation knobs do nothing.  very little drive... any ideas?  gonna buy a new tube.  the one I got was from ebay and looks a little janky..
Also, does the 100pf (C5) cap have to be silver mica?  Overlooked this detail when populating and put a ceramic one in there.

Zerro

No one can consider now what is wrong at your Tuber. Reflow your welding, clear all points from tin dust (needle), controll voltages at anodes. Some anode rersistor must be there otherwise anode would be hardly connected with power - so, no signal can be out. Set at anodes 12V as described in manual. This is basic for another probing. With audioprobe. Then we can do another tests.
"Nudíte se? Kupte si našeho cvičeného ježka! Pobaví vás svými veselýmí kousky!"