Anybody got DBX 160 pcb over lay they would care to shre with me ?

[Rob Flinn]

Does anybody have the pcb overlay showing the component positions against part numbers for the DBX 160 VU ??  Trying to fix one & it's a pita without it ....
This must be the 4th time I've asked for it over the years

 

[dude24man]

dont know if this will help but, I have some close up pictures of a dbx 161. 

 

[beatnik]

on last page of this cal manual theres a basic layout with transistor and trimpot placement

https://www.dropbox.com/s/osy2m1p4lcc3glz/dbx%20160%20calibration.pdf?dl=0

 

[beatnik]

those dbx are usually easy to repair, common problems i've seen so far is the ota in the rms can failing and also cold solderings on the vca and rms can.  the vu meters are also going bad quite often

 

[Rob Flinn]

dude24 man thanks for that the diag at the bottom is useful.

The problem I had is the breaking up that you get.  I reflowed all the usual suspects but the - PSU rail has gone dowm now ....... just trying to work ou which transisitor is which so that diag is useful.

 

[dude24man]

I had a dbx 161 with -power rail not working. wound up being a shorted opamp.  there are links on the  -/+ rails from the PSU , lift the links and see if you get your rails back

 

[Rob Flinn]

Thanks, the links being the white things ?

 

[dude24man]

Yes

 

[guy_4]

Also pay attention to replace the light bulbs of the Vumeter.
Best,
Guy