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Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => The Newcomer's Forum => Topic started by: bkeeley on December 03, 2009, 08:37:05 PM

Title: Vibration Technology Ltd. VR140 Guitar Equalizer Amp (Help with repairs)
Post by: bkeeley on December 03, 2009, 08:37:05 PM
Hello All,

here's the challenge... Vibration Technology Ltd. (VT) Guitar Amp VR-140

Will not power on.

I cannot find any skits, previous owner information, or company information beyond the most basic details.

Can anyone help me get off the ground ?
Title: Re: Vibration Technology Ltd. VR140 Guitar Equalizer Amp (Help with repairs)
Post by: awdman on December 03, 2009, 09:17:20 PM
Is the amp powering on at all? If it has a fuse have you checked it?
Title: Re: Vibration Technology Ltd. VR140 Guitar Equalizer Amp (Help with repairs)
Post by: bkeeley on December 10, 2009, 03:02:36 PM
It is not powering on at all. It is missing a 3A Slo-Blo fuse in the back. I just purchased one, although the fuse cover/cap is missing. I will need to find a cap to secure the fuse. I am worried if I replace the fuse, it will not solve the problem because I assume the fuse blew due to a issue with the power. I will have to test it out. 
Title: Re: Vibration Technology Ltd. VR140 Guitar Equalizer Amp (Help with repairs)
Post by: awdman on December 10, 2009, 10:55:53 PM
If you plan on repairing it yourself I would start by making a short check lamp (standard light bulb wired in series) See picture.

Mount the items on a small board and insulate all wiring by using electrical boxes to not be exposed to high voltage/current.

start at a 60 watt buld and if it glows bright you have a short and the troubleshooting fun begins.

- Anthony
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