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The last knob on the right should give 16 different effects, are you saying the knob doesn't work at all? Is it turning smoothly? Do you hear any clicks as you turn it? Is anything plugged into the dsp socket on the back where the footswitch would go?
That is probably a momentary switch that is dirty and sticking. These onboard effects on guitar amps are usually nothing more than a computer sound card and I've found bad connections going to and from them as well. I do think that switch is dirty and sticking, though.
Hi there,I have the same problem with my flexwave 120. I opened the amp to measure several capacitors on the small effect circuit board. If one of this capaciters have internal short circuit, wich will effect the others causing effects to fail. I removed them one by one to find possible short circuit. All capacitors were ok. I think the problem is in the processor wich is to diffucult to replace. I think it's easier to replace the effects circuit board. But where do we find this board??
Witth an oscilloscope analyze the ripple voltage across C67, C70, C14, and C12. Pay close attention to the last two of these which are on +/- 15 volt lines.
The "chirp" when shutting down is LIKELY normal and would probably be from teh DSP effects unit as it goes down. The voltages go out of the operating range and the device essentially goes nuts for a second or so.
I can understand your confusion... and a lot depends how you are going to use this. There are some caveats regarding the connections,
If you use the 1/4 outputs on the GSP, there is a speaker modeling like function that is NOT available, that IS available IF you use the XLR outputs.
The STP is an "Insert Snake" which is not really what you want as it is intended to send and receive (audio going both directions in the cable.
If you want that speaker function, then you should get two XLR to 1/4 TRS cables and go from the XLR's on the GSP to the Left and Right inputs on the back of the Crate. Your audio or guitar then is connected to the GSP guitar input.
If you connect the guitar to the crate and then use the STP, Plug the TRS single connector into the Left/Mono/send/rtn on the Crate. The Send cable of the Y should go to the Send jack on the back of the GSP and the return should go to the left return jack of the GSP. This connection I would NOT recommend as it will be noisier and you will lose the stereo effect capabiltiy since the effect is inserted as a mono.
I believe you would be happier with using the XLR's to carry left and right to the Crate and run your inout to the GSP. In short, you have the wrong cable to do the best job.
Yes. Are you saying that the only indication that it is running at all is that the fans are running? So the tubes don't light up? No indicators on the front of the amp? Power supplies that provide multiple voltages, which your amp has, can provide some of the voltages while having a problem that prevents them from providing others, all while not blowing a fuse. If you are not confident in your ability to work on a piece of electronic equipment that has 120VAC coming in and at least 175VDC or more present inside it, bring it to a service center. The good news is that it is probably not horribly serious. Problems like this can almost always be repaired in a cost effective manner.