Dokorder 7050 won't play. - UK Vintage Radio Repair and Restoration Discussion Forum

mrmagnetophon · 3rd Mar 2012, 1:54 am

I've got a Dokorder 7050 which I'm working on, but it won't play!
Fast winds are both strong, and the capstan is running fine, but for some reason everytime I put the pinch roller against the capstan, engaging guides it won't run. Something odd seems to be going on with the solenoids, anyone have a clue?

Steve_P · 3rd Mar 2012, 11:40 pm

This is the massive auto reverse beast isn't it? Get a new belt kit and change both the belts. Clean the deck.

There's a diode in the power supply which operates the solenoids. Change it.

Also, the capstan tends to harden. If it has, it depends on how bad, If it's just gone a bit, try this...

http://www.reelprosoundguys.com/RestoreKit.html

There's a guy in the USA who does re-rubbering of capstans. I can't trace the address right now.

Cheers,

Steve P.

mrmagnetophon · 3rd Mar 2012, 11:59 pm

Well Steve, it's already been recapped. I replaced the belts first, and it's been really cleaned. I think I found the issue, the headcover must be installed to use and the tension arm is over sensitive.

-Chris

3rd Mar 2012, 1:54 am	#1
mrmagnetophon Retired Dormant Member Join Date: Sep 2010 Location: Ohio, USA. Posts: 757	Dokorder 7050 won't play. I've got a Dokorder 7050 which I'm working on, but it won't play! Fast winds are both strong, and the capstan is running fine, but for some reason everytime I put the pinch roller against the capstan, engaging guides it won't run. Something odd seems to be going on with the solenoids, anyone have a clue?

3rd Mar 2012, 11:40 pm	#2
Steve_P Dekatron Join Date: Sep 2003 Location: Bolton, Greater Manchester, UK. Posts: 6,644	Re: Dokorder 7050 wont play This is the massive auto reverse beast isn't it? Get a new belt kit and change both the belts. Clean the deck. There's a diode in the power supply which operates the solenoids. Change it. Also, the capstan tends to harden. If it has, it depends on how bad, If it's just gone a bit, try this... http://www.reelprosoundguys.com/RestoreKit.html There's a guy in the USA who does re-rubbering of capstans. I can't trace the address right now. Cheers, Steve P. __________________ If we've always had it, why is the Car Boot open? You're not sneaking another Old TV in are you...?

3rd Mar 2012, 11:59 pm	#3
mrmagnetophon Retired Dormant Member Join Date: Sep 2010 Location: Ohio, USA. Posts: 757	Re: Dokorder 7050 won't play. Well Steve, it's already been recapped. I replaced the belts first, and it's been really cleaned. I think I found the issue, the headcover must be installed to use and the tension arm is over sensitive. -Chris