The transistor is only labeled Y1. You need to ask Topping if the Q1 transistor is PNP or NPN.I'm not sure what happened by my Topping D10 kicked the bucket along with my Amp. I think the amp went first and may have sent excessive Voltage back through the audio cables (RCA)? There was definitely the burnt electronic smell in the plugs (RCA). Upon review of the board, it appears that the transistor labeled Q1 blew, you can see it in the picture. The OMRON relay might need replacing too as the top of it is not ruler flat (has a hump in the middle). I've gone through the rest of the board and see no other physical damage.
The D10 is not recognized by a computer at all. When I plug it in, the screen breifly shows 44.1PCM for 1 second followed by --- lines. Computer never detcts anything as being plugged in, tried multiple computers.
I can try replacing the transistor and see if that would help but I cannot read the values on it due to damage.
1) Can anyone kind enough post a high res pic or tell me the markings on the transistor?
2) Any know how people in here think the problem is bigger than the transistor as computer can't even detect a dac being plugged in?
THank you,
3) Should I cut my losses and just get an E30?
I think the purpose of this transistor is to drive the white relay of OMRON next door.
I think it is important to consider why such troubles occur before replacing the transistor.
I bought the E30 in addition to the D10 and the sound quality is clearly improved. I recommend purchasing the E30.