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Old 25th Jul 2019, 3:02 pm   #3
Refugee
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Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,553
Default Re: Tektronix 7A26 problems

I had two of those with bandwidth limiter slide switches that were dirty and intermittent.
You should see all the tool marks on those diff amp chips where the twiddler had been there before me.
All the chips survived despite the scars.
Quite a bit of work can be done on them with an external dual rail 15 volt power supply.
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