Originally Posted by spark-el  Could be, if they've seen some abuse or excessive vibration. Follow what
oar and sail says and you may be able to isolate the problem. Check your
voltage across each coil, use an analog meter if possible, the needle will
show vibration if the voltage is fluctuating. |
Unfortunately I only have a digital meter; would I still be able to isolate the problem? I have to say it sounds to me that all the relays are vibrating.
As stated this problem is affecting both boards, does that imply they both have a cold solder joint?
John