Kasino U100-P repair - HELP!

[Enzo]

Well, um... if we knew what boards the circuit used, we could look on the schematic.

In all likelihood, it is a line out to drive a slave amp.

[J M Fahey]

I do have a question regarding the monitor Jack on the rear panel. What's the purpose? By that,  I mean, what type of monitor will work with it? Thanks,again.

To drive a monitor cabinet which it sort of implies it *should* be in parallel with the main speaker out or have its own dedicated power amp , because you need power (voltage *and* current) to move a heavy cone and voice coil back and forth, but I guess that in this case it's a glorified name for a Line/Preamp out (or worse, a 20:1 attenuated tap from speaker out) to drive an external power amp and speakers .
Which yes, could be used to "monitor" what's coming out of main speakers.

Remember these amps were designed and made Looooooooonnnnnngggggg ago, they were charting unknown territory, and some of then acceptable "solutions" are not so today.

[LJN]

Very true. I don't play anywhere,  so I don't really have any use for any monitor.  I was just curious about it. My amps are actually overkill for my tiny bedroom, but they sound good.