Dear forumers,
I need help for my TDS-524A showing no trace on any channel.
Recap and board wash performed succesfully time ago.
Self test is OK, no error in the log.
I am pretty sure it triggers properly because the "T" symbol on screen moves according to the signal.
I am thinking a video RAM chip may be defective and I replaced 2 of them without result.
There are 8 ram chips related to waveform display.
Hope someone would like to offer some hint on where to investigate.
Many thanks in advance to all of you.
Enrico
