CRT Deflection amplifier power transistors heat sink. These transistors blow very easily, several had been replaced and more were blown when I got the unit. The transistor at top is probably the only original one left. The transistors are controlled by the A225 deflection amplifier card ( 40K) . A fan blows directly on this heat sink to keep it cool.
Feel free to contact me, David Gesswein email@example.com
with any questions, comments on the web site, or if you have related equipment,
documentation, software etc. you are willing to part with. I am
interested in anything PDP-8
related, computers, peripherals used with them, DEC or third party, or