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ALPS Motorized Volume Pot- Repair (VTL 5.5 Preamp)

Hi,
Need some help diagnosing a strange problem with my VTL Preamp’s Volume pot. It uses an Alps motorized pot, that is controlled via the remote. When I turn on the VTL, the remote controls the volume normally for the first couple of minutes and then stops working. 

Manually the the volume pot works perfectly, smooth, precise and with no crackling. I’m guessing that there is something happening when the preamp warms up that cuts off the remote control of the pot.. any theories?

im pretty handy and would feel comfortable trying to perform a repair myself, but could use some experienced advice.

Thanks!!
arniespin

Showing 2 responses by arniespin

arniespin's avatar
arniespin OP
24 posts
 
Thank you Kijanki!
I will try the shake method but I’m doubtful that it will work because the volume control is the only thing that cuts off- the mute and phase-shift buttons on the remote always work normally. 
arniespin's avatar
arniespin OP
24 posts
 
Hi Cedargrover-
the preamp is solid state regulated. Haven’t started measuring voltages yet but I’ll definitely have a look at the volume motor ( before and after it cuts out).

Kijanki-
I’ll have to time it to see if it always takes the same amount of time to cut out. No numeric display on this pre.


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