Dynacord DRP 16 Digital Reverb

[spoontex]

Hi,

I've an old Dynacord DRP 16. It works, but I think that it's time of some maintenance.

Do you replace the electrolytic caps? at least for the power supply caps?


https://i.ibb.co/VLMX5x2/IMG-20200806-210913519.jpg

https://i.ibb.co/3FwCwxM/trimmers.jpg


Inside the unit has two trimmers, I read the manual and say:


8.- Adjustment of level display:

Set nominal input signal ( 200 Hz ), adjust R135 so that the 0 dB led just starts to light up.

R135 is the trimmer near input.

So, anybody can explain how to adjust this? and the level pot? max or min? 200 Hz with signal generator?

How is the procedure?

Thanks.




Measuring Dates DRP 16 Entire Unit:

2. Input and output voltages, with reference to modulation display 0 dB;
tone and mix controls in middle position; output control full to right;
measuring frequency 200 Hz; Service switch S 401 closed.

a) inputs +- 15 dB
Input control full to right, HI/LO setting pressed

(input control turned down)

Terminal front 100mV 3.3V
Terminal back 100mV 3.3V

b) input control full to right, HI/LO setting pulled out

(input setting turned down)

Terminal front 3mV 150mV
Terminal back 3mV 150mV