A while back I posted this problem but life happened and I had to focus on something else for a minute but this weekend I decided to look at this thing again. I will tell you what I know and then I hope someone can/will help me get this beast going, so here we go..... When I first got this thing it would power on but no sound from any source including headphones. I found the service bulletin with the service manual and I followed it to the letter and then turned on again. No sound still, anywhere. so by process of elimination, I have found the problem to be in the left side output board. If I "un-seat" it from the main power board and have only the right side hooked up, it comes out of protection within a couple seconds of powering on. However I soon discovered another problem, I still get zero sound from any source. Heres a couple other things I know or have done that may or may not be a clue to someone as to what is going on. 1. when I powered it on the first time, all lights including the small red lights for each source were working as well as both meters were working. all 4 fuses have been tested, replaced and tested again. they are good however I'm not getting but have my source lights and both meters have stopped working. 2.output transistors have matching output voltages of -68 and +68 I'm not a technician but I have a general understanding of components and their function. I have several meters and I can solder pretty good and I'm not afraid to get inside this thing as long as I have instructions. I'm pretty sure I can figure out what is going on in the output board but I'm not sure why I'm still not getting sound from the other side when it does come out of protection. Any help would be greatly appreciated. Even if it someone all the way in Honduras Also if it gets to the point where I feel I cant get this thing fixed, I would not be to proud to send this to a trusted and well known member of this site who has repaired gear for other members. If anyone has used someone from this site with positive results, I would love to hear about them also. Thanks in advance for any help. Shaun PS I have cleaned the pots and both pins are in the right way on the back.