Happy Paddy's Day :) ES 160 Festival Jukebox NO -5V

NSMES160Jukebox · by **NSMES160Jukebox** » Thu Mar 17, 2016 2:00 pm

Nsm ES 160 Festival Jukebox NO -5V on main control board... this seems to be intermittent fault -5V Led was working, stopped, worked again and had now stopped Again?!
please advise?

Happy Paddy's Day

by **Ron Rich** » Thu Mar 17, 2016 3:30 pm

Happy Paddy's day to all --
Something intermittent like this is the most difficult to find--IMHO. You will need to get out the schematic and trace where it comes from, and find where it is failing--USUALLY, something like this is a poor contact on a plug, or a poor (dry-cold) solder joint somewhere in the chain. Ron Rich

NSMES160Jukebox · by **NSMES160Jukebox** » Sat Mar 19, 2016 11:16 am

Fault was found to be VR202... It's the -5V voltage regulator, closeup seen in the top pic...

by **Ron Rich** » Sat Mar 19, 2016 3:20 pm

If that regulator was "turning off/on", you MAY want to check it's specs. Some of that size regulators have built in "protection" for an over current draw. If the NSM specs call for the protection, you may have a problem somewhere in the system ?? Ron Rich

NSMES160Jukebox · by **NSMES160Jukebox** » Sun Mar 20, 2016 2:25 am

Will keep that in mind thanks... I'm waiting on IR diodes LD242 to replace in the coin reader and carriage position wheel. Should then be in a position to test how it functions, hopefully