Laney rbw200 sound keeps cutting out then coming back on

I would check C37 & C38. If one is loose or bad connection, there will be 100/120HZ noise.

First, plug your guitar and cable into a different amp to make sure the problem is the amp. Then check to see if you have output from any headphone jack or effects loop. If so your problem is in the power amp section. If not, it's likely the preamp section. Whichever section it is, it will most likely need to go to the shop.

What is the impedance on the devices? It sounds to me like the amp and the pickups are not rated for each other.

How do you have the DIP switches set? That controls the voltages.

Sounds like output valve, if the amp is more than few hundred hours then suspect this for sure. I don't know much about this amp specifically but does the sound fade/return suddenly or over a few seconds? Try running it with the back off and fan on the valves etc. Then play at loudness where problem occurs and see if any improvement. Remember that at band practice you always play much louder than you think and put a lot of stress on it.

OFTEN Roland has the opposite sense of normally closed contacts versus normally open. Test the switch with any continuity tester or an ohmmeter to see that the contacts work and come out to the switch. ALSO some amps require a TRS type connection (three wire plug) and others do not. From the schematic it appears that the Laney may REQUIRE a normally closed contact. There is also a pull switch involved that you MAY have to change the state of for operation of the pedal.

Here is the scheamtic for your amp:

http://elektrotanya.com/laney_aor100h_sch.jpg/download.html

Scroll down to the link at the page "Get Manual" and click to download. It is a JPG type file.

clean all "vr" (variable resistors) like volume bass treb etc, sounds like bad contacts. this happens due time while they oxidating. maybe helps. use "contact" spray for best result

Hi, when ever an amplifier comes on and no sound with it,it means that you will need to replace the sound IC that controls the sound that comes out from the output.

When you replace it the amplifier will be fine.

Have a nice day.

The second jack which is present on MOST speakers is for daisy-chaining a second speaker. One has to make sure to NOT go below the minimum impedance allowed by your amplifier. Often this minimum is 4 ohms which allows TWO 8 ohm speakers to be connected to the 4 ohm output.

CHANGE THE TUBES. ARITHEBASSPLAYER