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Originally Posted by sawman
So do you think this is were my problem is ? also do you know were i can get one of these? thanks
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It might or might not be where the problem is. The first thing I always check is electrolytic caps, voltage regulation, and power diodes. Then look I for thermal damage, cold solder joints, and errant pieces of metal and crud making non-factory connections under the microscope.
If you don't know where to get capacitors, voltage regulators, resistors and diodes you don't have the experience to not damage the board. This is not a common part. If you damage it from inexperience you'll have difficulty replacing it.
The HVAC controllers have microchips that are fairly static sensitive and made of unobtainium. Care needs to be taken to not burn em up from errant static electricity.
This board is not one to cut your teeth on. My advice is to farm out the repair. If you make a mess, that a tech can actually repair, it'll cost double or triple what it would if you hadn't screwed it up.
When I get boards with lifted pads and other physical damage I contact the owner to let them know that the price just went way way way up. If the board turns out to be un-repairable because the static sensitive parts were damaged or there's internal damage in a multi-layer board I still charge for my diagnostic time to reach that determination. That may sound a little harsh but I charge for my time.