This one's a little bit different insofar as we're looking at a rather nice Sony SLHF950 Betamax that came in for repair having had 12 volts applied the wrong way round to the CN power board.

A good service manual for this is here:
https://freeservicemanuals.info/en/se...
There are others out there but the scanning is so poor that you can't read the voltages or some of the component and connector numbers and I was battling with that before I found the above one.

Sorry for all the coughs in this one I had quite a nasty cold! Sorry for all the 'ums'; I'm working on those!

Really sorry for the audio issues. Work in progress to sort those too and I'll fill you in on how I sort this!

Chapters:
00:00 Introduction
01:40 First checks
07:05 Connecting an external 12v power supply
11:14 Checking the standby circuit
20:13 Fuses on the SS50 board and disassembly
26:19 Testing after N5 fuse replacement on SS50 PCB
27:06 Standby issue and the clock chip
32:54 Coming out of standby and display issue
36:27 No sled/ skate movement
38:40 Display issue solved
39:40 No sled/ skate movement issue resolved
40:46 Testing and conclusion

#betamax #sony #mrbetabyte