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"Alte deutsche Amps" und der Dynacord Reference 500

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marcomeloni1979:
Thank you so much for you thorough answer Bernhard! I did order the correct A/D converters but it was very helpful to know about the change in voltage when turning the knobs. This amp makes servicing a point to point amp like changing the batteries in a remote control! :laugh: :laugh:

Is there an "up" and "down" when switching the MC144111P or both ways are fine? Also, to take out the board where the A/D converters are, is it just a matter to lever it out of its sockets? 

Thanks again!
Marco

Thinline:
Hi!
It is not possible to lever them out of the sockets - they are soldered!
And what do you mean with: "Is there an "up" and "down" when switching the MC144111P or both ways are fine?"
You have to solder the new chips with the notch on them the way the outsoldered ones were in their places - don't make a mistake there!
You can pull out the whole digital board and place it on a antistatic surface. Make sure that you have no static electricity on your hands when you work on it!!
I found it not so difficult to work on these amps, because of the modular building of the boards (better than an eyeled board with wires running underneath!)
Good luck!
Bernhard

marcomeloni1979:
Ok, thanks a lot for the clarifications. I only worked on PTP amps so far so this is gonna be a big step un in game.

Marco

Thinline:
I would not solder the IC's directly to the board - instead of that i would buy two IC sockets , solder them and stick the D/A converters into them.
Bernhard

marcomeloni1979:

--- Zitat von: Thinline am  5.10.2022 12:04 ---I would not solder the IC's directly to the board - instead of that i would buy two IC sockets , solder them and stick the D/A converters into them.
Bernhard

--- Ende Zitat ---

Thank you for the tip Bernhard, although after a few google searches, i couldnt find any sockets for the IC's...

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