Question about Dunlop 535qc Chrome Crybaby Wah Pedal

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No effect. i plug in my instrument and only get volume and no effects.

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Please check if you step full down if the switch under the pedal is switching. If it does than check the battery.


Posted on Jun 02, 2010


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This could be many things and unless you are electronically adept it is unlikely you can DIY the repair... HOWEVER I want you to try one thing first: Sometimes the contacts on the switches of the Effects send and return go bad leaving the input to the power amp section floating and it can feedback. To test this, plug an INSTRUMENT cable between the send and return effects jacks on the back. This bypasses the contacts, If the amp behaves, you could run it this way getting a short cable or have the amp worked on at a shop to replace the jack. The jacks are really rather poor quality on musical amps in general.

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I would try using another speaker to see if you can get the sound back, this will help you narrow down the problem, you can also use the effect send to feed anothe amp to see if you get the sound OK.
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That is the way it is supposed to work... It is a level control to control the level sent to an EXTERNAL effects unit. What external effects unit are you using? Brand and model please. If you proportion more to the effects loop, you want to make sure the EXTERNAL effects unit is on and its gain controls are up. The foot switch input should control the EXTERNAL effects unit when you plug the footswitch into the EXTERNAL unit. The footswitch input on the amp itself has NOTHING to do with the external effect loop, it only affects the amp's own DFX unit.

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What is the volume in and out on the back for

There is no "volume in and out" on the back of this unit. I am not sure what you are refering to. There IS an FX level control switch on the back which is used IF you are using EXTERNAL effects units. This switch is used to set the level to MATCH that required of the EXTERNAL device. If you are NOT using external effect unit, this switch is not used. It will not be active unless you plug into the external FX jacks.

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A lot of pedals when on bypass actually just connect the signal straight through... WHILE when using the effect, the volume control parameter is active. You need to balance the effect volume control against the straight through level which you have no control over.

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