Peltier Effect Wine Cooler Repair

[notsoseamless]

Hi, anyone got a circuit diagram for a Peltier effect wine cooler?

The PCB has Fosham Hanyi Computer PCB8110FF1 but could not google anything useful.

Guess I'll start by replacing all the electrolytic caps but it would be nice to have a schematic of the board.

Many thanks
John

[Alex Eisenhut]

Hi, anyone got a circuit diagram for a Peltier effect wine cooler?

The PCB has Fosham Hanyi Computer PCB8110FF1 but could not google anything useful.

Guess I'll start by replacing all the electrolytic caps but it would be nice to have a schematic of the board.

Many thanks
John

Check diodes and switching transistors.

[peterrash]

I assume you've checked that the Peltier module itself is good? I had one that got too hot and failed (essentially went open-circuit). You can test that quite easily with a power supply and multimeter.

[Alex Eisenhut]

I assume you've checked that the Peltier module itself is good? I had one that got too hot and failed (essentially went open-circuit). You can test that quite easily with a power supply and multimeter.

Good point, those things get dusty too.

[notsoseamless]

Many thanks for the replies.

Yes good point and I will check the Peltier out when I open the unit again when the switching transistors and capacitors arrive. Also ordered replacement silent Noctua fans.

The cooler has two Peltier devices, one above the other and it was the upper board had failed, possibly due to the failure of the cooling fans. Isolated on the bench one of the 13005 transistors gets very hot. Also two of the electrolytic had rather crispy insulation, though they appear OK with the AVO.

Will post when I fix the thing.

John