Hi,
I am trying to repair a dbx 150 noise reduction system.
One channel is extremely weak.
No visual damage, switches are O.K., and I partly resoldered the circuit board, especially the RCA inputs and outputs.
Is there anywhere a service manual or schematic available?
I am trying to repair a dbx 150 noise reduction system.
One channel is extremely weak.
No visual damage, switches are O.K., and I partly resoldered the circuit board, especially the RCA inputs and outputs.
Is there anywhere a service manual or schematic available?
I did of course use Google, nothing to find.
I did found a couple of "dbx 150 service manual", but these were in reallity dbx 150X service manuals, a different unit!
I did found a couple of "dbx 150 service manual", but these were in reallity dbx 150X service manuals, a different unit!
As far as I know the 150 X is a balanced 600 Ohm version of the 150, so the schematics of the 150 X could help you.
Before wasting any time searching for the schematic, check if the electrolytic capacitors have been already replaced. Replace them if they are still the original ones. I serviced a dbx of this era, and all the small electrolytic capacitors were dry and out of spec. Not surprising, due to the age of this device.
Hi,
It is clear that the schematics or the service manual are not available, nowhere.
As stated before, I resoldered all pcb pads of the RCA terminals to repair bad connections.
No result at all, one output still missing
Upon close inspection under magnification, I detected one nearly invisible pcb track rupture near one RCA terminal.
After correcting this, the unit works normally.
I checked all electrolytic capacitieve, all within specs!
It is clear that the schematics or the service manual are not available, nowhere.
As stated before, I resoldered all pcb pads of the RCA terminals to repair bad connections.
No result at all, one output still missing
Upon close inspection under magnification, I detected one nearly invisible pcb track rupture near one RCA terminal.
After correcting this, the unit works normally.
I checked all electrolytic capacitieve, all within specs!
