VSP-M1

[Carm99]

I have a VSP-M1 with no sound. I dont know if sound is going in or not coming out as theres nothing at all ,not even hiss.
Does anyone know about these particular ones.
I'll take some photos later so you can see the board.
Thanks

[kasfamily]

Hi,- EFFECT LEVEL and RANGE can also affect OUTPUT level. Adjust accordingly for best output.

[Carm99]

I tried all that. Theres no sound or any output ,at all ,from it.

[kasfamily]

You promised a photo...

[Carm99]

I'll take some photos later on. I cleaned the boards and had a good look at them and couldn't see anything wrong.
Im gonna try it again first. Then ill take it apart again for photos.
Cheers.

[Carm99]

Hi
Heres some photos of the main board.

[Carm99]

Heres the Schematic

[kasfamily]

Check the voltage : 3,3/5/8/-8/

[Carm99]

Thanks Man
Ill do that later.👍
Im thinking its an IC myself. No Audio at all.

[kasfamily]

Ok

[Carm99]

For future reference.

[Carm99]

Voltages Checked and we are not getting some of them.

[Carm99]

There's 9 volts on both sides of DO1 and DO2 but only on one side of DO3. One side is 0.8.🤔
No Negative Voltage.

[Carm99]

Diodes

[Carm99]

DO3 Looks a bit grey.

[kasfamily]

Check the external power supply - it should output an alternating voltage!

[Carm99]

I was thinking about the supply as I checked everything and its ok. The unit powers up as the front screen is on and you can adjust everything.
I was wondering where the negative voltage was going to appear from.
Let me look in the manual.

[kasfamily]

The diagram shows - AC 10 v 1500 mA

[Carm99]

Yea thats what Im using.
I tested it with a multimeter. Its going + then 0. AC
I'll try with the analogue one when I find it.
Im looking for another one ,if I have it.

[kasfamily]

Show the photo of the nameplate of this power supply