if you have a metal backed transistor at q401 make sure it has an insulation sheet
Checked it at lunch today and the original did not have a metal back on it, so not one on the replacement either...but I did put heat compound between it and the heatsink though.
My new FET is on order, so just have to wait until next week to try that...in the meantime go the the chasis back out so I can keep playing with it...gonna check to see if my "hadoken" short blew anything else, since I neglected to do so initially...
Will let everyone know how it turns out. Thanks!
Also, forgot to mention, I am going to replace the FET with a 2sk1358...any objections?
[EDIT]
Well, my "newbie underoos" are apparently showing again....sigh....
got my new sub power board from Rick today(again, cannot thank you enough Rick!) and noticed immediately that in
my hurry to put the old one back together I had put the ic in backwards...
Yes, I know, I suck...but in my defense after the "hadoken" incident the board was completely blackened right there so there is no way I would have ever been able to read the numbers to see which pin went where...still no excuse as I simply didn't pay attention while removing the old one, but a justification will do I suppose...
At any rate, after I've had a chance to settle down a bit, I'm gonna flip it around(assuming it ain't totally fried already) and if that don't work, I'm gonna go ahead and put in the new sub power board....still going to replace the FET when the new one arrives just for good measure....figure I've basically rebuilt the thing anyway at this point, so might as well....anyways, just wanted to let everyone know my mistake...hopefully that will be a good lesson to other noobs (and me) to PAY ATTENTION when you do this work.
[Edit 2]
Ok, managed to fix most of the damage I did, so now I'm just back to waiting for the FET.
[Edit 3]
Well, maybe my luck is changing for the better...my sister iscoming to visit from another state this weekend and is going to stop by a good parts store for me on her way...so should have my new FETs tonight, as well as a new ba159 to replace d502 with...(that's a leftover from the "hadoken" incident). So should know something more tomorrow...
this go around I replaced/am replacing:
the fuse (obviously)
IC2(again)
the entire sub power board
FET
d502
possibly the HOT again if it needs it(haven't checked yet)
So, with these, and of course double checking the remaining parts, I'm hoping I get some signs of life...update to follow...
[Edit 4]
Went ahead and tried it since I had a little time...
so it comes on with what I would call the normal sound...
the fuse does not blow...
it does not chirp...
it does not spark or make unusual noises...
but I get no picture at all...and no glow in the neck...
hrmmm....I've read that r510 and r516 can cause this...but other than that I have no idea...
so I'm open to suggestions!
in the mean time I guess I will test those 2 when I get time...will let ya all know...