Repairing the Korg KA-320 power supply

[dochara]

If the fragile central pin in the plug of the KA-320 snaps off, one has to buy a new power supply. Yet, if the plug could be purchased separately, it's an easy repair job (just two drops of solder)' Would anyone know where such a plug/cable could be sourced?

 

[Ian]

Be very careful when opening up PSUs like that - although they may be unplugged, there may still be plenty of charge in the on-board capacitors (which should ideally be discharged safely).

Which plug do you want to replace (the part where you mention a fragile centre pin), as I'm not sure I understand from your diagram. The highlighted part (red circle) looks like a cable that is soldered directly to the PCB.

If it's the end with the DC plug on it, it's probably easier to snip the cable, strip it back and solder a new DC plug on the end and heatshrink the cables (rather than replace the whole cable).

 

[happyrat1]

Take a caliper to the plug and measure the plug.

Then go to Ebay and search for XXX x XXX mm power cable and see what turns up. If you have to buy a fully terminated cable and just remove the extra end.

Also while you're at it measure the hole in the power supply and look for a suitable strain relief as well.

Gary

 

[dochara]

You're right of course, I bulldozed in and opened it. Still, now that I'm this far, I might as well try and fix it!

The main reason I opened it without snipping the cable was that I had no idea how many wires were inside. Now that I see it's just two, I know that I should have just snipped the cable.

Anyway, these are the specs:

 

[dochara]

Thanks Gary. I should of course have snipped the cable and searched for a plug but that would be the easy way! I didn't know how many wires were inside.

From my photo, what should I look for? There's a thin needle-like pin (or should be!) in the plug-barrel.

 

[happyrat1]

Wrong specs.

You need the inside and outside diameters of the plug itself NOT THE SOCKET and the diameter of the hole in the box for the strain relief.

Gary

 

[happyrat1]

It's probably 3.5 mm x 2.2 mm ID x OD

 

[dochara]

Wrong specs.

You need the inside and outside diameters of the plug itself NOT THE SOCKET and the diameter of the hole in the box for the strain relief.

Gary

That is the plug, not the socket.

 

[happyrat1]

You need the inside and outside diameters of the barrel. Not the rubber tip.

Gary

 

[dochara]

Just wondering if someone might have a dead KA-320 with a good DC plug? Glad to pay via PayPal if you would snip the cable and post it to me?

 

[happyrat1]

You can buy a compatible supply for $16 on Amazon

Amazon.com : korg ka320 power supply

Gary

 

[dochara]

You can buy a compatible supply for $16 on Amazon

Amazon.com : korg ka320 power supply

Gary

I know but shipping to Ireland is too expensive.

 

[happyrat1]

Amazon UK has it for 14 Pounds.

MyVolts 12V power supply adaptor compatible with Korg KA-320 PSU part - UK plug: Amazon.co.uk: Musical Instruments & DJ

Free delivery and returns on eligible orders. Buy MyVolts 12V power supply adaptor compatible with Korg KA-320 PSU part - UK plug at Amazon UK.

www.amazon.co.uk

Gary

 

[dochara]

Yes, I saw that but MyVolts has some very poor reviews on TrustPilot.

 

[happyrat1]

Try Ebay then. Lots of Chinese electronic stuff ships with free shipping.

Gary

 

[happyrat1]

Basically it's up to you.

It costs what it costs

Gary