Thank you, @fxlaptop, I'm happy someone had a similar issue as my YiHua 853D.
I tried to charge a burnt out battery and something went wrong. My volt output always shows 29.5 and volt meter reading just goes crazy until the R14 resistor burns out, then it shows 0.0 and turning the pot does nothing. I replaced my R14 (150 Ohm 3W5%) resistor today since it was totally burnt to a crisp. Replacement started heating up and almost burnt out right away even with the powersupply control off. Going back to the hobby shop tomorrow to get a replacement transistor, the model on my large rear transistor is 2N3773. When I unplug the transistor from the socket on the mainboard then R14 does not heat up. Soldering iron and heat gun work fine.
you have overloaded it somehow and it reverse biased and blew the transistor..
also if you burn resistor R14 and or R56? , they are both 3 watt @ 5% tolerance
150 ohms on R14 -- and .33 ohms on R56
Update 6/10/2019: Transistor leaks like a sieve. Called around the Toronto area for a replacement 2N3773 and nobody has one. I dont want to wait 2 months to ship from China but it seems like thats what I need to do.
Update 11/15/2019: Got a 2N3772 and replaced the 2n3773 on the back. After running a successful smoke test the voltmeter/power supply is working like new.