I have a slightly different but very similar model. They are a pair of coolers mounted in a really nice heavy wood credenza (VT-NAPA-2). Vinotemp customer service was no help at all. They said no more parts available. The unit was $2.000 new. Both coolers were not operational after 10 years.
One control/power board had a bulging electrolytic capacitor which, when changed restored it to operational status.
The problem with the other control/power board could not really be determined so I changed out all the electrolytic capacitors (''apprx. 15 pcs. assorted , available ebay-cheap'') and also the Regulator Semiconductor (''“L7804CV” from ebay-cheap''). That fixed the second control/power board. Both units running like new.
You need to be comfortable with soldering but parts cost me:
* Capacitor large kit $15.-
* Regulator 10pcs $5.-, (only one used)
* Mosfet & line side regulator chips (Not Used) $ 10.-
Spent about 8 hrs, including parts sourcing.
Now I have spare parts & can fix again if needed. Contact me if you wish.
Alex
(fpaj@fpaj.net)