On Mon, Jun 11, 2018 at 04:47 am, Raymond Domp Frank wrote:
Is it easy to replace Q1418 with another 2N3055?
AFAIR, at least the vertical board must be disconnected (several peltola
connectors and the like) and removed. In order to do that, the front BNC's for
CH1 and CH2 have to be removed as well as several knobs. No, that's not a
quick job.
After Keith's report that he had already exchanged Q1418, I had a look into a 465 in my possession.
As it turns out, possibly Q1418 can be removed without removing the vertical board, maybe sideways since there is some room between the end of that board and the 'scope's rear plate. Just not obvious how to clear Q1418 on its heat sink across the screw ends fixed to the backplate, either up or sideways. OTOH, Tek's design engineers may have done a clever job here.
Raymond
P.S. Keith, I know those days. I always tell myself they must be good for something...
Raymond Domp Frank