need opinion on amp

Bob Cox · Post by **Bob Cox** » 21 Jul 2005 10:58 am

I recently shipped a working 614e webb amp that I sold, and when it reached its destination it wouldn't work and the only light that comes on is in the back,any sugestion?[This message was edited by Bob Cox on 21 July 2005 at 11:59 AM.]

Dave Grafe · Post by **Dave Grafe** » 21 Jul 2005 11:29 am

I am not familiar enough with the Webb to take this very far, but what is the light in the back that comes on? Is it the power on indicator?

If it appears that there the amp is turning on without generating bad smells or smoke the first thing to check would be the speaker jumper cable at both the amp plug and speaker posts. It's the simplest fix and also a very common point of failure.

If that doesn't do it an internal examination by someone who knows what they are doing at would be indicated.

Mark Herrick · Post by **Mark Herrick** » 21 Jul 2005 12:54 pm

I believe Webb amps are solid state?

First, discharge the filter caps.

Visually check to see if the circuit board is cracked. (Magnifying glass might help.)

Check component solder connections and all other connectors; Molex, multi-pin, RCA, etc. that are inside the chassis.

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[This message was edited by Mark Herrick on 21 July 2005 at 02:02 PM.]

Bob Cox · Post by **Bob Cox** » 21 Jul 2005 4:56 pm

any webb tecs out there?

Bob Lawrence · Post by **Bob Lawrence** » 21 Jul 2005 5:13 pm

The light on the back shows that it's getting AC power. Most likely one of the internal connectors (mostly white and they feed the power , ground etc to the various boards) came loose due to vibration. If you could get someone to check them (when the amp is unplugged) you may find a loose connector(they just plug together) and it may solve the problem.

Bob Cox · Post by **Bob Cox** » 21 Jul 2005 5:15 pm

Thanks I hope this solves the problem,it must be simple,It worked fine before I shipped it.

Bob Lawrence · Post by **Bob Lawrence** » 21 Jul 2005 5:17 pm

Another point. Only allow someone to check it if they understand electronics because things like large filter capacitors (if they touch the wrong thing) can zap you with high current and hurt you.

Brad Sarno · Post by **Brad Sarno** » 21 Jul 2005 10:56 pm

Is this the older, two-piece chassis? If so, remove the front chassis faceplate and make sure all wires are well connected. I think there are about 5 molex connectors that mate the two chassis halves. It sounds like the power isn't getting to the preamp/front part. Safely check/clean the grey/purple/grey (I think) connector as it carries the power to the front. They're rugged amps. It's probably a simple connection and came loose in transit.

Brad Sarno