Originally Posted by Mr Bob
Pioneers have had cold solder joint problems for ages, long before HD. Would recommend resoldering anything in there that has a halo around its leg on the pad, and possibly just everything, if you've got the time.
Thanks for the advice. Resoldering is almost always worth a shot in my book. My big problem now, is that I've procrastinated so much, I can't remember if I resoldered the main power supply board since I found mechanical sensitivity in it. Those interior boards are such contortionistic pieces.
But I must say I'm really excited to hear about your observation of "a halo around its leg on the pad." I did a search and found you further discussing it at http://www.avsforum.com/avs-vb/showt...=402397&page=7
Appears the "halo" is the fracture line which can appear white-ish.
I will say this, I have inspected memory connectors on laptop motherboards which are notorious for cracking and rendering that slot unusable. Using nice stereo microscopy, I can agree with you completely that these cracks are invisible, however, all you have to do as far as memory slots go, is just put the least amount of pressure on them with your finger/probe while watching and out of nowhere, you will see the crack open and close. To really inspect a joint, I use magnification that makes the solder glob about 25-50% of my field of view. And as expected, the max stress point are the outer most solder points. Maybe the last 3 legs will have cracks on each end of the memory slot. It is so dramatic to see that crack open, I should take a video of it and put on youtube but I don't have the time.
Thanks for the expert advice.
I'm thinking the very first thing to do is survey my voltages at the various connectors, then proceed with the resoldering. However, the more I think about it, the more I think I've already resoldered the main power supply board which if true, is bad because that means I have a problem with a component. If it is the flyback transformer, its probably game over. Maybe I'll get lucky and it will be some electrolytic caps.