I got my comeuppance as I usually do. At the start of replacing chips on this PCC board I mentioned I might learn something. I did. I re-learned an old lesson. Nothing takes the place of troubleshooting properly. I replaced all the chips on the PCC board with no results. So, I broke out the meter and started checking the transistors. I found an atypical reading on one of two that work together. Standard operating procedure is to desolder the transistors and check out of circuit. Lo….the collector legs fell off both transistors when removed from the board. I’m guessing they got bent and when straightened out the legs broke. Had I gotten out the meter like I should have in the first place this would have been a pretty quick fix. The only consolation I can take is that these two transistors work together turning on and off at the end of the first chips chosen for replacement-having to do with Side B. I replaced the two NPN transistors and now the mech will pick up a record when moving from right to left.
I started work on a fun project. A previous owner had replaced the bottom glass on the SMC2 with a mirror. Fine and good. Those glasses were prone to having all the pretty stuff flake off. Here’s where it gets a little strange. There is a lamp holder underneath that glass. It holds a starter and a 14″ lamp. It was removed and the wires pulled out of the harness loom as well as out of the molex plug. Why they didn’t just take the lamp out and leave everything in place is a mystery. So I get to make a lamp holder. I already have a replacement glass courtesy of Victory Glass and $165. This should be a pretty straightforward process.
First things first is to gather all the needed materials. I got a thin piece of steel from Lowe’s. A fellow was parting out a Seeburg DS and I got the front lamp holders and wiring from him. Thank you Berry B. I have lamps and plenty of white paint.
