Thread: OM617A Tach Amp
View Single Post
  #142  
Old 04-29-2021, 01:04 AM
math math is offline
Registered User
 
Join Date: Aug 2014
Posts: 186
Quote:
Originally Posted by ykobayashi View Post
Oh, I guess that would be me. I make these.

The original shown in this thread from years ago was made by Bob Myers “Techguy512”. It’s my understanding he passed on in 2015.

Math, it looks like your MB Electronics Upgrades amp is damaged. I think the program memory is corrupted and it gets stuck in the loop that generates the needle sweep. The only other explanation is it could be kicked into some diagnostic mode or it’s pickup circuit is receiving high frequency noise.
hmm odd.

I did replace the capacitors on the tachometer thinking they were gone.

the pickup sensor/cable is brand new reading 71 ohms.
Reply With Quote