Roland KC 550 Intermittent Sound

[dallas kruse]

I have a Roland KC 550 amp.
I have had zero issues with it thus far.

I'm getting intermittent sound when higher dB levels are pushed through it.

I use to to play keyboard sounds, left hand synth bass, and foot drums (all via MainStage).

When i start to push my volume levels, the sound from the amp with just cut out for a split second then come back on.

Before I take it and spend hundreds on repair, does any have experience with this problem?

I have opened the front (taking off the front speaker) and checked the speaker wiring and it looks fine.

Any other thoughts?

 

[delaware dave]

Could be as simple as a loose connection at the speaker. Hi levels could be causing it to disconnect temporarily due to vibration.

 

[dallas kruse]

As stated in the original post, I checked the wires previously and all looked/looks fine.

 

[happyrat1]

It really could be anything from a cold solder joint to an internal thermal issue inside a transistor or an IC. Even a technician will have a hard time tracking it down unless he can reproduce the fault consistently at his bench.

Either way it's unlikely that it's anything a layman can track down without a schematic and the proper tools.

Gary

 

[dallas kruse]

I'm certainly a layman. I opened and looked for anything obvious.
Looks like I'm gonna spend a few hundred bucks on a repair.

Any luck with a backup amp like the Alto Kick 15s?

 

[dallas kruse]

problem still happening. Anyone else have this issue?

At loud volumes, the sound will cut out for a few seconds. I haven't had time to take this is as this is my gigging amp.

Any other suggestions to try?

 

[happyrat1]

My only advice is to take it to the repair shop and gig with a rental until it's fixed.

Your other choices are slim and none

Gary