Allen & Heath GS3 DIY mods

[kamil_k]

Hi there!

Two years ago I bought this desk, and started doing some repair work, since it was in rather poor condition.

I replaced faders, and more recently recapped both group and master section - I used higher value caps, than stock ones (220uF). On the master section I also replaced op amps from stock ones TL072s to newer ones TLE2072IP and NE5532PE4 as well.

After soldering everything back to it's place and putting it together for testing, I noticed I am getting only right channel on the master out, regardless if it is mic or line in signal. However, when I test with oscillator signal, I am getting both left and right on all groups, but still only right output on the master.

Unless I was doing something wrong , I came to the conclusion it must be broken interconnecting ribbon cable, so I already contacted Allen & Heath asking for a replacement, but awaiting their response.

But whilst, here, I wondered if anyone might have a spare ribbon cable for sale?

Thanks

 

[Newmarket]

Hi there!

Two years ago I bought this desk, and started doing some repair work, since it was in rather poor condition.

I replaced faders, and more recently recapped both group and master section - I used higher value caps, than stock ones (220uF). On the master section I also replaced op amps from stock ones TL072s to newer ones TLE2072IP and NE5532PE4 as well.

After soldering everything back to it's place and putting it together for testing, I noticed I am getting only right channel on the master out, regardless if it is mic or line in signal. However, when I test with oscillator signal, I am getting both left and right on all groups, but still only right output on the master.

Unless I was doing something wrong , I came to the conclusion it must be broken interconnecting ribbon cable, so I already contacted Allen & Heath asking for a replacement, but awaiting their response.

But whilst, here, I wondered if anyone might have a spare ribbon cable for sale?

Thanks

Is it normal IDC ribbon cable and connectors ?
If so you could make one or get someone to do it for you ?

 

[kamil_k]

I would imagine it is standard IDC connector.

How can I make one myself then?

 

[Newmarket]

I would imagine it is standard IDC connector.

How can I make one myself then?

Assuming you don't have access to the proper tooling then use a vice to fit the IDC connectors to the cable. Practice on some scrap bits first

 

[kamil_k]

No I don't have access to tools to make it I am afraid. I am still awaiting response from Allen & Heath regarding my enquiry, but also I was given contact details to an ex A&H service engineer, so maybe he might be able to help out with spare part I am looking for