SUNKKO 709A Modifications (for example wrong voltage product)

[barry_rawn]

Hi Folks;

In a rush, I ordered the 110V version of the SUNKKO 709A by mistake. I live in a country with 230V/50Hz.

I'm now contemplating my options. I opened the device and saw that there's a 110/220V marking on the PCB (see attachments), which I assume is the triac that chops up the incoming sine wave (https://www.sunkko.net/blog/how-the-current-level-and-pulse-setting-work/)

My question is this: has anyone got information about whether the hardware can be configured to be either 110/220, with just the use of different taps and connections to the PCB?

I want to believe this is true, and it's not crazy, given
1) the markings on the board
2) the simplicity for the manufacturer of making just one version of hardware, and using a variant on the assembly.

I see posts on the forum about souping up the 709A, but didn't see this particular issue covered, happy to be corrected on that.

best regards,
Barry

 

[barry_rawn]

P.S maybe the idea of "different taps" is not likely, but I could see them possibly modifying the triac behaviour, and just using the same transformer with acceptable capabilities for either 220V and 110V..

 

[barry_rawn]

Damn, update: going to check this out:

https://www.jonshobbies.com/modify-sunkko-737g-from-120v-to-240v-operation.html

in case it is relevant.

 

[fechter]

There is a topic about this here somewhere. I think it can be done.

 

[amberwolf]

There is a topic about this here somewhere.

Different model, but
https://endless-sphere.com/forums/viewtopic.php?f=14&t=98733