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Electronics => Repair => Topic started by: jdragoset on July 27, 2019, 08:51:50 pm

Title: Tektronix 2235, A/N-USM 488 Horizontal Alternate Intensify Error
Post by: jdragoset on July 27, 2019, 08:51:50 pm

Any quick check for A intensify always running to end of A trace regardless of B setting?
Start of intensify is correct and moves with delay time and B trace is correctly displayed.

Title: Re: Tektronix 2235, A/N-USM 488 Horizontal Alternate Intensify Error
Post by: jdragoset on July 30, 2019, 12:30:50 am

Found Q643 (Tek 1510190-00) with OC emitter junction and temporarily replaced with a 2N5961 until Tek replacement arrives.
"A" intensified now works correctly.