Re: Transistor for 454A Horizontal Amp, and a manual

David DiGiacomo

On Sat, Oct 17, 2015 at 3:45 PM, Matthew Cottrell <mcottrell@...> wrote:

I've been troubleshooting my 454A which has a sweep problem. Looks like
Q1038 in the horizontal amplifier may be dead. It is a Tektronix
151-0271-00 (which Sphere doesn't have). Supposedly it crosses to a
2N4261 (but that device is in a 4-pin TO-72, whereas the Tek part is a
plastic TO-18).
This page lists the MPSH69 as equivalent, which makes sense if it's
really a 3-pin 2N4261:

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