Hello,

My kings tracker popped a transistor here in Cape Town after the last cold front by over volt cloud effect 😞

I used to run 3S 2P 415w Canadians for +- 1.3 years & recently added another 3S-1P JA 455w with a slightly higher volts rating (Feb 2022)..
Looks like on the 05/04 at ~11:30 there was a spike where after the mppt was not happy anymore 😞

Symptoms are: relay connects, volt drops to battery volt @ 51v and then relay disconnects and tracker displays the open circuit volt. Rinse & repeat.
So im guessing a transistor failed & was wondering if someone had a broken king with a working tracker I could perhaps buy as spares ?



Its still generating energy but not even 50% of the 9 panels at the minute and the constant disconnects well, its not very useful at the minute at all 🙂
Yes I have done the full off for a while without any sources, still the same.
I have opened the inverter case and briefly inspected the tracker, I saw no popped cap or circuit blown.

The inverter will be going off to the distributors for a repair quote but in the meanwhile I'm trying my luck here to maybe locate a replacement myself and attempt a self repair.

Will be stripping the inverter a little more this afternoon in order to check if I can see a blown transistor. 

 

Edited April 9, 20224 yr by Proxicon
spelling

Removed the tracker, could not locate any obvious caps or transistors that looked bad (did not perform any test, just a visual check)

could not remove the heatsink to inspect those 8x transistors (4x + 4x -), tried to remove the screws but the heatsink would not budge & appears suspended by the transistors , did not want to force it off.