DaveBad

Anybody had issues with the 700 suddenly starting to go in and out, almost like a tremolo sound? It's happened twice at gigs now months apart. I realized that both gigs were outside and temps in the high 80's/low 90's . Luckily, I had my back up 700, and this one functioned fine. After it happened the first time, I didn't try to play it for awhile, but when I finally pulled it out to take it in for repair, it played fine for about 10 days, now it's happening again. Ideas? (I did take it in to the authorized repair center, but since they couldn't replicate the problem a few weeks ago, they couldn't help me.)