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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: Rosser on May 10, 2015, 05:19:12 PM

Title: Pot replacement original Duo
Post by: Rosser on May 10, 2015, 05:19:12 PM

I am trying to revive a Duo that does not spin or play CD's I replaced the caps and swapped the complete cd unit into a duo-r and it worked perfectly. When I was hunting around on the board I noticed that the pot on Vr102 was super loose and would spin all the way around with just a touch of the finger. Does any one know if I can replace the pots with the plastic type from the DUO-R and if so do you by chance know the part number from Digi-key or mouser so I could order some I have never really messed with pots and most component parts shops are not the most user friendly
Thanks for any assistance 

Title: Re: Pot replacement original Duo
Post by: thesteve on May 11, 2015, 07:46:52 AM

The pots should spin all the way around
Bad pots is unlikely

Title: Re: Pot replacement original Duo
Post by: Rosser on May 11, 2015, 09:28:19 AM

yeah the issue is not with the spinning per say its more about how loose it is someone used the wrong type of screw driver or bent it

Title: Re: Pot replacement original Duo
Post by: pnauts on May 11, 2015, 11:15:24 AM

I think VR102 is next to the 10K-18K range, you have to measure pitch between legs to search which one could fit (I suppose many could). I don't know how many turns are capable of the OEM trimmers, but if you wish set it precisely, it's a parameter you have to take in count.

Title: Re: Pot replacement original Duo
Post by: thesteve on May 11, 2015, 07:30:06 PM

check it with a meter
if it works leave it