Hello Guys, another electronics hobbyist here, I also got the 853D, it was working great, I even used it to charge some 12v8ah lead acid batteries, and fried it when I tried to recover an old battery that was ready for the recycler, so, dont try to desulfate batteries with it,
hehehehe, anyway I have located the issue
, and resistor R56 is shorted, but it is a 5 band resistor and I have no idea on what the value is, all online value checkers fail since it has a black band on one edge, if any of you can give me some advise, it would be much appreciated.
Best regards
P.S. by the way R56 is the big blue resistor, 2 or 3 watts to the right of the picture.