Hello everyone!
I'm currently restoring Yamaha CX-1000. But i made one big mistake.
Disassembled SW701 (Rec. out switch), cleaned...and forgot default position of the movable part. Now it's working strangely. Was unable to find any photo on the internet. Does have manual, but i have trouble decipher output code table.
Maybe someone will be able to help me? Almost restored this nice preamp (all that left is to repair SW701 and replace motor in motorized volume control).
With all respect,
Alex.
I'm currently restoring Yamaha CX-1000. But i made one big mistake.
Disassembled SW701 (Rec. out switch), cleaned...and forgot default position of the movable part. Now it's working strangely. Was unable to find any photo on the internet. Does have manual, but i have trouble decipher output code table.
Maybe someone will be able to help me? Almost restored this nice preamp (all that left is to repair SW701 and replace motor in motorized volume control).
With all respect,
Alex.
Attachments
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From the photo I could find it looks like an ALPS RK27. If you know how many gang and the value I'm sure you can get the Alps part to match. Or the motor itself may be repairable/replaceable.Already found it out. Now i must find VF282900 (motorized volume pot). But so far was unable to find one even on japanese sites.
From the photo I could find it looks like an ALPS RK27. If you know how many gang and the value I'm sure you can get the Alps part to match. Or the motor itself may be repairable/replaceable.
Resistance 10K, 4 units in stack. But with additional mounting and 5-6V DC motor.
BTW: do not tight bracing nut to the max. It can block motor from turning pot axis freely. Volume curve is A (inverted log).
Now i will look for recapping this unit (but it'll cost more than pot replacement. If anyone have ready capacitor list for CX-1000, please, share.
Sorry for bad english.
Now i will look for recapping this unit (but it'll cost more than pot replacement. If anyone have ready capacitor list for CX-1000, please, share.
Sorry for bad english.
Last edited:
BTW: do not tight bracing nut to the max. It can block motor from turning pot axis freely. Volume curve is A (inverted log).
Now i will look for recapping this unit (but it'll cost more than pot replacement. If anyone have ready capacitor list for CX-1000, please, share.
Sorry for bad english.
Hello Javik
Can you post a photo of the old pot
Showing the gear Side mechanism
Have you rcvd the list replaces the cap for Yamaha cx1000
Thanks and rgds
Shree
Hello Javik
Can you post a photo of the old pot
Showing the gear Side mechanism
Have you rcvd the list replaces the cap for Yamaha cx1000
Thanks and rgds
Shree
Hello
Have attached a PDF of a recap done by a member
Check if it helps in any way
Rgds Shree
Attachments
Thanks for the photograph
The gear mechanism seems to be intact,
What has caused the failure
Rgds
Shree
It was the motor. I fixed it, but already installed new ALPS, so i kept this unit as a spare part. (Need to clean resistance modules, though).
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