Re: AP Mother board heating up
Remove the cover plate from the front of the CP controller and look inside. Make sure that the power transistors are attached to the side of the box via the Phillips screws that attach their tabs. The aluminum box is the heatsink for these power devices, but if for some reason the screw got loose (high vibration could loosen them) the transistors would get warmer than usual. They will not fail in any way since they have internal thermal overload protection, so don't get all worried. But it might explain extra heat if it is not due to hard mesh on the worm (which I suspect was the actual problem).toggle quoted messageShow quoted text
Normally the CP controller box will get warm when running at the sidereal rate. You can check the current draw from the 12 volt power source with a cheap and cheerful line ammeter, available at most electronic stores. Normal current draw is around 1/3 to 1/2 amp when it is just tracking, may go to 1.5 amps with both axes slewing.
From: Suresh Mohan Neelmegh drsureshmohan@... [ap-gto]
Sent: Tue, Feb 14, 2017 4:02 pm
Subject: Re: [ap-gto] Re: AP Mother board heating up
Thanks Joe ,
Will keep an eye