Haier HVT 12ABS fan runs, but fridge does not get cool

This wine cooler hasn't held temperature for months, even though during the winter my living room gets to 58 F at night. I've had it maybe a year.

I took the back off, and 2 of the 3 heat sinks felt cool, which means the thermoelectric pack was just conducting cold out of the cabinet in 2 of 3 cases. The third one felt slightly warm, as it should. I checked that the cool ones had 12 v to them, they did, so they should have been pumping heat out.

I put bowls of ice inside the unit, and when the temperatures got down to the set points, I heard relays click, so I figured the control unit was OK.

I removed one of the TEC modules that was cold on the outside, and taped up the hole with masking tape.

I unplugged the fan from the circuit board and unscrewed that fan assembly from the heat sink.

I then clipped the leads to the TEC unit, cut away the blobs of hot melt glue, and disassembled the cooling module. I took the TEC device and hooked it back up, making sure it had voltage to it. After awhile, both sides just felt slightly warm so I knew it was bad.

Got on line and ordered 4 (to have spares) TEC1-12703 coolers. I have thermal grease. When the parts come, I will re-assemble and should be good to go.

I don't know what blows the TEC devices, they should be very robust. Maybe Haier got a bad bunch of them, I read almost all bad reviews on these wine coolers.