It's time to restore the 11/45 - progress!

On Thu, Feb 5, 2015 at 4:54 PM, tony duell <ard at p850ug1.demon.co.uk> wrote: OK, please forgive my ignorance, here. To give you some idea of my electronics expertise level, I'd like you to know that I just googled crowbar :D Now, I'm handy with a soldering iron and understand these sorts of things OK once I have a run through, but I just have no idea where to begin. So again, forgive me, but I'm going to ask some very green questions. I'm sure you guys are going to want to strangle me or laugh me out of the room, but, hey, I'm trying, darn it, so please don't plonk me! From the wikipedia article I read, I guess this crowbar thing tripping, is just its way of trying to protect the rest of the system from overcurrent, right? And the dried up cap is one thing what could make it think there was an overcurrent situation, correct? I'v had a little luck in the past with such things, but I don't know that I'm going to understand how to read the schematic. I'm going to try and find one now. Also going to try to find a manual that describes the power supply. But how do I know which one is the output cap? What is a valid test once I find it? I guess I could charge it up on a car battery and see how long it holds or something like that. I don't have much electronics gear here. Borrowed a Craftsman digital VOM from my electrician friend (although it's telling me I have 140v AC on the mains!) and I have a soldering iron, heated desoldering bulb thing and some desoldering braid, flux and lead solder. BTW, according to this VOM, there's 24.5 AC and 14.2 volts DC being input into the H745 regulator. Is this too low? Maybe this has something to do with the H742 adjustment that I didn't find? Or maybe this VOM is miscalibrated. thx jake