get the adapter

Strongly suggested Mike order the Meade AC adapter #546. $33 at Canadian Telescopes with free shipping. Easy return policy. It is listed as being compatible with the ETX-80 and DS-2000. If it worked at driving his Meade Star Navigator 102, then it would prove that the fault was with the custom CLA made by his friend. And it would get him up and running in the backyard. And at powered campsites... I suggested it would not be efficient to run off the AC invertor. But I think he missed that subtlety.