Re: Tektronic 466 - Storage Modes inop


Jim McIntyre
 

First off, please forgive my mis-spelling in the title...

It was a typo, honest, I know how to spell Tektronix...


So, I've found a interesting hint. The 1.4V supply, which I guess is supposed to be regulated to 1.4V by Q2092/Q2094 is sitting at -1.8V all the time - even through an erase cycle. What I haven't figured out yet is what is supposed to source current into the 1.4V rail, as Q2094 appears to be a shunt regulator of sorts...

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