26-05-2015, 06:58 AM
Finally got my act together and took a trip to Mark Hennessy with teh dreaded DM64 and a DM63.
A few hours on the bench with some of Mark's decent test equipment and his great depth of knowledge established that the '64 had eht way too high due to high resistor values and low 14v rail for the same reason.
Got that up and running well, I just have to put it all back together, its guts are hanging out at the moment because its the only way to get access to some parts.
The '63 was a little difficult, led us on a little dance for a while but Mark likes these and it succumbed eventually. Similar problems with resistors going high.
So now I have 2 working 'scopes in pretty good order, thank you Mark. Hope I didn't deplete your component stocks too much or disrupt your household. Please thank your wife for me, the coffee kept me awake.
Took a side trip whilst down south to Steven Ostler's and collected a pile of old valves, thank you Steve,
which I will get sorted and listed so that any member that needs a few more can let me know and I'll post them off.
All in a long but interesting day, very productive and enjoyable.
A few hours on the bench with some of Mark's decent test equipment and his great depth of knowledge established that the '64 had eht way too high due to high resistor values and low 14v rail for the same reason.
Got that up and running well, I just have to put it all back together, its guts are hanging out at the moment because its the only way to get access to some parts.
The '63 was a little difficult, led us on a little dance for a while but Mark likes these and it succumbed eventually. Similar problems with resistors going high.
So now I have 2 working 'scopes in pretty good order, thank you Mark. Hope I didn't deplete your component stocks too much or disrupt your household. Please thank your wife for me, the coffee kept me awake.
Took a side trip whilst down south to Steven Ostler's and collected a pile of old valves, thank you Steve,
which I will get sorted and listed so that any member that needs a few more can let me know and I'll post them off.
All in a long but interesting day, very productive and enjoyable.
Boater Sam.
