Page 1 of 1

501 power supply

PostPosted: Wed Mar 14, 2018 2:20 pm
by killthezombie
Hi all!

After a moderately lucky bid on an auction, we've got our hands on a flight-cased 501 with no power supply.

We paid very little and want to get it running and hopefully install in our studio (we have a Scorpion ii currently).

Blue Dog power supplies in the UK will happily make us one but they don't know the PIN OUT on the power inputs, so can't make us up the missing cable, which we can't even find out what specific connector would be needed.

I also had a couple of other questions for any 501 owners - ours has two power inputs, one that someone has sharpie'd "red" - does the 501 require two PSUs or is it for a redundant PSU? I've attached a pic.

Any help to bring this desk back to life would be super appreciated!

Image
images upload

Re: 501 power supply

PostPosted: Wed Mar 14, 2018 4:27 pm
by Sirbastian
the big is very similar to the 501..
If a BIG console has two power ports on the back then one is for the console and the other for the automation/virtual dynamics.
I have included a picture of the BIG schematics

Re: 501 power supply

PostPosted: Wed Mar 14, 2018 4:28 pm
by Sirbastian
If you would like a better pic please let me know

Re: 501 power supply

PostPosted: Wed Mar 14, 2018 4:30 pm
by killthezombie
Sirbastian wrote:If you would like a better pic please let me know


Amazing! Yeah, that would be fab if you could PM me a higher res one?

Re: 501 power supply

PostPosted: Wed Mar 14, 2018 5:03 pm
by Sirbastian
I send you a better one in a minute.
You dan also verify the pin out by opening the back and check the colors on the connector.


- red +17.5V
- blue -17.5V
- yellow agnd
- white + 5V
- black -5V / dgnd

Re: 501 power supply

PostPosted: Wed Mar 14, 2018 5:09 pm
by Sirbastian
Crap I cant edit..

Green/yellow is agnd
Just yellow is 48V

Re: 501 power supply

PostPosted: Wed Apr 11, 2018 12:00 am
by David Rochester
The 501 was designed with dual power connectors for redundant power supplies (which was done on the Recall and 501 because they were LIVE desks), but only requires 1 to operate fully. Someone has changed one of the connectors to accommodate a power supply with an 8 pin LITTON connector instead of the 19 pin LITTON which was standard.
If a BIG has 2 power connectors, it came with (2) 850 supplies and was split inside as (1) 850 would not power a BIG(44).
There should be a pinout for the 19 pin LITTON power connector in the 501 manual (available from AMS in the UK) and possibly a pinout for the 8 pin LITTON in a BIG manual.

I have an MPS15 replacement power supply available, but no LITTON cable. It could however be replaced with an 8 pin EP connector and made to work. You can email me for details at drsound@charter.net

Re: 501 power supply

PostPosted: Wed Apr 11, 2018 12:17 am
by David Rochester
Sorry, manual from AML in the UK!!