Howdy Everyone-
A few years ago, I decided to build a HeaterMeter and have enjoyed building and using it. Well, a few weeks ago, I (partially) fried my HeaterMeter through a major mistake on my part.
A few notes:
Heatermeter (v4.3) was connected to a 12v battery (but reverse polarity - BIG oops)
I had the HeaterMeter connected to RalphTrimble's RD3 with the Aux Thermocouple (and necessary modification for use documented in forum)
Upon correcting the polarity, I found the Unit will boot up, but lost all blower and servo response.
During diagnosis, one of the first things I did was to replace Q1
I then eventually found that the trace on the circuit board between D3 and the +12 power of Q3 had been fried/melted/broken
Upon bridging/repair of the trace, the blower now seems to be operating correctly. However the servo only gave a few "grunts" and stopped working. Subsequently, I replaced the servo with a new one from Vorpal.
Everything appears to by working now. After the electrical stress that subjected my poor HeaterMeter to, are there any other components that I should check and/or replace?
I appreciate any insight or help.
John
A few years ago, I decided to build a HeaterMeter and have enjoyed building and using it. Well, a few weeks ago, I (partially) fried my HeaterMeter through a major mistake on my part.
A few notes:
Heatermeter (v4.3) was connected to a 12v battery (but reverse polarity - BIG oops)
I had the HeaterMeter connected to RalphTrimble's RD3 with the Aux Thermocouple (and necessary modification for use documented in forum)
Upon correcting the polarity, I found the Unit will boot up, but lost all blower and servo response.
During diagnosis, one of the first things I did was to replace Q1
I then eventually found that the trace on the circuit board between D3 and the +12 power of Q3 had been fried/melted/broken
Upon bridging/repair of the trace, the blower now seems to be operating correctly. However the servo only gave a few "grunts" and stopped working. Subsequently, I replaced the servo with a new one from Vorpal.
Everything appears to by working now. After the electrical stress that subjected my poor HeaterMeter to, are there any other components that I should check and/or replace?
I appreciate any insight or help.
John