Hello,
I have joined the club of the Datron 4920 owners but mine is without the M suffix. I have read the big topic devoted to the 4920 and 4920M but it is entirely speaking about the M. I have obviously 2 blown resistors on the ADC board but my board has a lot more components and is quite different from the one (M) pictured. Therefore I am looking for the service manual of the 4920 without suffix. Thank you.