My Marshall VS100 head has a problem...
Here are the symptoms;
Clean channel is fine, although it does have a slight hum at high volumes. When I run the overdrive channels there is a load squeel when the volume is above 1. With the volume below 1 the sound is great (there is a load buzz), but when I try to play at higher volumes there is a real bad feedback type sound. This happens in both overdrive channels but not in the clean channel.
I have tried to replace the tube and it is the same problem. I've tried different guitars, speaker cabs, cables and it is the same problem.
I have also tried to plug the guitar into the effects loop and there is no squeel at high volumes when in the overdrive channels, although there is very little overdrive also.
One note: When I got the amp I had to resolder the main power switch. It was not turning on so I resoldered it.
Here are the symptoms;
Clean channel is fine, although it does have a slight hum at high volumes. When I run the overdrive channels there is a load squeel when the volume is above 1. With the volume below 1 the sound is great (there is a load buzz), but when I try to play at higher volumes there is a real bad feedback type sound. This happens in both overdrive channels but not in the clean channel.
I have tried to replace the tube and it is the same problem. I've tried different guitars, speaker cabs, cables and it is the same problem.
I have also tried to plug the guitar into the effects loop and there is no squeel at high volumes when in the overdrive channels, although there is very little overdrive also.
One note: When I got the amp I had to resolder the main power switch. It was not turning on so I resoldered it.
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