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Vintage Synth Repair

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Re: Yamaha DX21 will not power up

2010-08-01 by Mark

OK, I just plugged in the supply on my workbench and tested the pins. I also checked and tested all of the traces and found no cold joints or cracks in the

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Re: Yamaha DX21 will not power up

2010-07-31 by Doug

Mark, Rhetoric: Troubleshooting anything without seeing it is always difficult, at best. :-) That said, I m not familiar with the DX21 specifically, but I

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Yamaha DX21 will not power up

2010-07-31 by Mark

I recently scored a non-working DX21 on the cheap, and it will not power up. No lights, response, or life whatsoever is in this machine. I don t even hear the

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Korg Delta keys..?

2010-07-30 by Quazimodo

Hi guys, I just accquired an old Korg Delta with a couple of broken keys. A G and the very top (full width) C Would anyone have any to sell or maybe know

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Re: Thanks for the welcome group

2010-07-28 by jabathaslut

PeWe Off hand I don t know who the switch manufacturer was. If you know the part number I can probably look it up. I have a some Akai info, I ll see if I have

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Thanks for the welcome group

2010-07-28 by jabathaslut

Hi, just a quick thanks to all for the kind welcome. As to my collection of stuff, it s on the to do list (umm has been for as long as I can remember..lol)I

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Re: New to the group

2010-07-26 by Mike de Vries

Would you consider selling some of your manuals to other enthusiasts? I m a sucker for original user & service manuals.. weird, yep.. OCD, maybe? I know

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Re: New to the group

2010-07-26 by Scott

... ...and I hear what youre saying about analog stuff...if I had ONLY known the future value of the stuff..I would have kept my Taurus Pedals and my CZ101 and

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Re: New to the group

2010-07-26 by Scott

... That s awesome Richard that you ve offered us folks some ( sorry about the spine though) I personally welcome you and you gifts and talents to the page. I

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New to the group

2010-07-26 by jabathaslut

Just wanted say hi and thanks to the moderators for letting me join this group. I have been involved in electronic music since I was a wee lad which was a

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Re: MicroMoog power supply

2010-07-23 by Paul

Hi Aron, I just had a look in my regulator draw looking for MC1468 and found some MC1438R, but I thaught I would check first....glad I did ! they are op-amp

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Re: MicroMoog power supply

2010-07-22 by stompboxaron

Well, I ve decided to replace the MC1468 with two voltage regulators (LM7815 and LM7915). When I get it working, I will post my documentation so people can fix

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Re: MicroMoog power supply

2010-07-22 by stompboxaron

Darn. I figured so. OK, my question is - I guess there are no more dual tracking ICs available that are easy to find. Does it really need to be dual tracking?

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