Rhodes Chroma Polaris

Aha!

I think I know what it going on.  A power issue.  Power supply?  I didn't do anything to it since I posted the last message and the panel went poof again.  The power supply heat sink was pretty warm.  I did not turn it off as mentioned.  My suspicion as correct.  This beastie hasn't seen usage in about 13 or so years...

Is there a way to check those trim pots without being a rocket scientist or should I invest in a power supply?   As we know I invested into this already and it's worth the $ for the replacement.  I can get one now.  Also a transformer, but I don't think it's that or it wouldn't go on.  Like my damn Mirage that puked on me and I need a transfromer for that bee-yatch...  rarer than hen's teeth.   

Any ideas now?

Tracy


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On Thu, 5/17/18, adirondack_pc@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

 Subject: [chromapolaris] A Different Question
 To: chromapolaris@...m
 Date: Thursday, May 17, 2018, 11:15 PM
 
 
  
 
 
 
   
 
 
     
       
       
       I just finished reseating my ribbon cables and all
 of the contacts work.  Even A1 - 12 through to K1-12.  
 
 Well, I haven't turned it
 off yet.  When I do so, I turn it on and poof...
 
 I'll get G and B at once,
 when under B it'll skip to H  and then move on to I
 when I push the next number.
 
 |I have finished reading 5,000 posts on
 vintagebbs about the Chroma and realize I may be slightly
 screwed here.  Revision 5.  No o-scope.  No tech repair
 guys within serious mileage.  May need to re-calibrate this
 sucker.  Found the 3 power supply trim pots as well as the
 other 2 on the mommy board.
 
 Cleaned all of the junk off the traces and did
 a full inspection but am no repair tech.   Replaced the
 face plate by Paul and it seems to work fine.   It's
 something else that is definitely whacky.  Been inside this
 beast more times than I wanted to be.  I'm going to
 leave it on all night to see if it burns out or "burns
 in" like we say in the PC world.
 
 When I did the diagnostics and adjustments, I
 had to constantly turn it off because it hung on a whim. 
 At least I know all the LEDs work!  I was trying to get a
 set of patches in but the tape process was a bust and my
 Midi connection sux at the moment.  I have Sound Quest 11
 but can't get the Polaris to talk.  I may have found
 that answer out but won't know until the other issues
 are addressed.
 
 Long winded, I know....  If anyone
 has the heart, empathy or even sympathy to guide me along
 I'd appreciate it.  I'm forgetting the other 2
 problems for now because they may get fixed in the
 process.
 Thanks for
 reading my manifesto....
 TracyWannabe Polaris
 player
 
 
 
     
      
 
     
     
 
 
 
 #yiv4208589304 #yiv4208589304 --