HP-97 sudden death

[wine+dine]

Thank you Katie and Bernhard. It is understood that the LC tank needs to be connected - I disconnected the printer board only to locate the excessive power draw, which turned out to be the printer motor being driven. With the LC connected, I do get 733 kHz oscillation on pins 13/14 but alas, no other digital activity anywhere. Phi 1/2 float high to 4-6 V and slowly fall down below 0.5 V when loaded with 2k2.
Doesn't look so good I guess ...
--Peter