Any idea if a new MB can be bought somewhere? Is there anything else to do with the TV besides dumping it to trash. Seems kind of waste, as the panel and rest of the TV is still in working condition.
You can find there also other mainboards for your model. Panel size doesn`t matter, for you should be ok mainboards from 32-46 inc.
Also check if m/b is from CI or CI+ model, but if this is not important for you - doesn`t matter which one you will order.
Mainboards are available also on e-bay, shopjimmy (maybe this one?) and so on.