Probably too obvious but. Are the battery contacts weakso pressing with the meter probe squeezes them enough to make contact.? On 23 February 2015 at 09:33, Lee Mulvogue wrote: > OK, bit of a bizarre one, I recently purchased for my 4yo son (and yes, > myself) a very neat little RC car, the WLToys L939. Went great for a > while, but I believe the transmitter got dropped and now it (TX) won't > turn on. > > Here's the bizarre part, and was hoping someone could come up with an > explanation and/or a fix, however hacky that may be. I've tried pulling > it all apart to check for obvious issues, and in the process of checking > voltages at various points, to see if power was getting to the board etc.= , > I have found that when measuring across all four AAs all of a sudden the > transmitter powers up and can control the car. Stop measuring, power > goes. > > Any thoughts on what could be happening here, and how I could hack it to > fix? Using rechargeable AAs, so I guess a bit of parasitic drain wouldn'= t > be too much of an issue if need be, better than a usesless transmitter an= d > thus car? > > Thanks > Lee > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 __________________________________________ David C Brown 43 Bings Road Whaley Bridge High Peak Phone: 01663 733236 Derbyshire eMail: dcb.home@gmail.com SK23 7ND web: www.bings-knowle.co.uk/dcb --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .