Monitora N 524/4 PSU Problem

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Murdock

Well-known member
Joined
Jan 28, 2015
Messages
992
Location
Germany
Hey folks,

I recently bought a Monitora N 524/4 power supply to power my growing collection of 24V modules.
I plugged it in and the power light goes on but from the 4 status LED's only the "shutdown" LED is on.
And I measured if I got 24V out but got nothing...
The power transformer seems to work as I get about 28V out of it. But following the circuit is kinda hard on that PCB.
Does anyone have the schematic to this psu? Or can tell me anything about it?

Here is a picture of the unit:
s-l1600.jpg
 
OK, I probed some spots myself and found some odd things...
The transformer puts out about 28Vac. After the bridge rectifier I get about 55Vdc... That's not normal, right?
There are two 4700uF elco caps after the rectifier and two 0.22uF film caps between the rectifier Diodes.
Should I exchange the bridge rectifier? Or could it be something else?
 
Nevermind. Got it working after replacing a component with a link.
https://groupdiy.com/index.php?topic=66719.0
 

Latest posts

Back
Top