Any SSL Techs out there? Help!

[analogstudio7]

Hi guys,

It's been a LONG time since I have been on the forum. Many medical issues with my son who unfortunately passed away.

But I am now a new SSL owner. I bought a used SSL 4040G and I am having issues with the power supply logic rail.

So I have been trying to figure out what is happening with the 7 volt power rail. Can anyone tell me what I should be reading at the output connector on the 661 PSU and on which pins for the logic rail power?

Is the +7 volts (ve) supposed to be on PIN E or PIN G of the connector? And the return (ground) is on which pin then?

I'm seeing some weird meter readings, but just for now need to clarify which pin is supposed to be the Positive and which the Negative?

Thanks for any help! I appreciate it!

Cheers,

Greg.

 

[pucho812]

do you not have the manual?

 

[plimousse]

Please look attached file
Cheers,
Pascal

 

[CJ]

I am very sorry for the loss of your son,  :'(

SSL Tech is the guy for this, do not know which pub he is in at the moment,

:'(

 

[plimousse]

Hi,

Sorry, I forget this page.
Cheers,
Pascal

 

[analogstudio7]

Thanks everyone!

The previous owner appears to have modified the power supply system and the changes are not, at first look, clear. The voltages measured at the E & G connector pins read in mVolts AC only...no DC volts at all.

The manual was not included with the console, so I have been trying to source one. In the meantime, I traced through the wiring and discovered that the white & brown wires terminate at the connector, but they have been revered and spliced. So this is why I was asking for help to clarify.

Now, after correcting the wiring, there is still no DC between pins E & G....only some risidual AC in the very low milliVolt range that varies.

I am going to wait until I have a proper manual, then go forward with further testing and fault finding.

I really appreciate all your input and help in clarifying these details!

Cheers!

Greg

 

[Whoops]

Hello Greg,
here at groupdiy "SSL Teck" Keith is the person that could probably help you.

I will advise you to go to this forum:

http://forum.sslmixed.com/

It's were SSL owners gather, a lot of tech info there and the right place to get help on your PSU problems

You can also get the complete Service Manual for your console from that forum

Let us know how it goes

 

[pucho812]

Thanks everyone!

The previous owner appears to have modified the power supply system and the changes are not, at first look, clear. The voltages measured at the E & G connector pins read in mVolts AC only...no DC volts at all.

The manual was not included with the console, so I have been trying to source one. In the meantime, I traced through the wiring and discovered that the white & brown wires terminate at the connector, but they have been revered and spliced. So this is why I was asking for help to clarify.

Now, after correcting the wiring, there is still no DC between pins E & G....only some risidual AC in the very low milliVolt range that varies.

I am going to wait until I have a proper manual, then go forward with further testing and fault finding.

I really appreciate all your input and help in clarifying these details!

Cheers!

Greg

Wait that does not make any sense,  when you measure the output  you cannot measure dc voltage? Are measuring in reference to ground?

 

[Michael Tibes]

Maybe the psu is shot? There have to be the usual DC voltages, though I don't remember right now what they were referenced to. Especially the +7 might have been referenced to the +16  or something like that, But I'd have to look it up to make sure. You absolutely need a manual...
The next question is whether it's easier and more reliable to build a new psu. They were always running too hot, which lead to all kind of nasty problems.

Michael

 

[sodderboy]

Very sorry about your son!
the sslmixed forum has a G manual downloadable for a nominal donation.
The logic voltage for the desk is referenced between logic + and V+, but you should have proper outputs from each rail at the supply. Measure before the connector so you bypass anyone's "improvements".
Mike

 

[analogstudio7]

Thanks guys.

The problem as I see it now is that I really don't know which polarity is supposed to be at the connector from the 7 Volt power rail as the wires were messed with.

Specifically if anyone can tell me this info....

What 7 Volt polarity is supposed to be at Pin E on the connector?

And what 7 volt polarity is supposed to be at Pin G on the connector?

I just smoked some logic card parts in the console. Bummmer. 

Thanks for any help.

Greg