Question about Music
My input signal cuts out. Sometimes hitting a note hard cuts it back in, but there's crackling. This worked a few times, now it's not,...Compressor shows a signal when I slap.
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Posted on Jan 02, 2017
I just fixed my bass amp with a similar problem last week: the problem is related to a loose connection on the PCB board (likely).
A bass amp is a rough place for circuitry: the low rumble and power shake a bass amp more than a guitar amp.
In my case, the power transistors needed to be re-soldered and then the grounding bolts and screws needed to be removed and cleaned because the connection was bad. Remember that when two different metals needed for an electric connection are toughing, there is the likelyhood that corrosion WILL happen.
My bass amp did basically the same thing yours did: sounded good at low volumes, but at higher volumes it would act up.
In short, there is nothing you can do (unless you are a repair person): you need to take it to a local music shop and have a tech fix the intermittant contact problem: someone who knows what they are doing should only take an hour at most.
Hope that helps!
Posted on Mar 31, 2009
This sounds like the thermal protection is activating. Make sure the vents and heatsinks have FREE AIRFLOW. If the sound cycles on and off, it could be a failure of the heater in the one vacuum tube in the unit. The heater could cooll and reconnect and then heat and disconnect.
Posted on Nov 03, 2010
SOURCE: This problem has to do
Easiest way to check is to measure the resistance between the ground pin of your cord and the chasis of the unit. It should be very low. That is the only critical one... Look at a receptacle. See one bllade is wide? That is the neutral. The other one is the HOT side. The HOT SIDE should go to either the fuse or the switch first in your unit. If you have those right the third wire will be right.
When powering up an amp there often is a noise until the amplifiers balance out. Very high quality and high power amps have a relay that disconnects the speaker until balance is reached... but the smaller amps do noot have this feature.
Posted on May 02, 2011
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