Author Topic: Beta Lead Quit On Me  (Read 3227 times)

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Offline deathfaces

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Beta Lead Quit On Me
« on: February 07, 2008, 10:09:34 pm »
My beta lead quit when i was playing this afternoon.  its a beta lead combo and i was playing it along with a 16ohm ampeg cabinet.  halfway through playing, the thing just went dead.  i checked all the fuses and cracked it open, everything looked in order.  any thoughts?  i'd prefer not to have to trash the thing.

thanks.

Offline mckinnon audio

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Re: Beta Lead Quit On Me
« Reply #1 on: February 07, 2008, 11:02:57 pm »
  Hi there,did you do a visual check on the fuses or did you use a meter ? I'd recommend a meter if you did just a visual. You might want to check out the accessory send and return jacks for each channel for oxidation,etc.Hope this is of some help,good luck Mel.

Offline deathfaces

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Re: Beta Lead Quit On Me
« Reply #2 on: February 08, 2008, 07:04:42 am »
thanks, i only did a visual check, but i'll test it with a meter.  if i dont have any luck there i'll bring it over to an amp tech.  i was more worried i'd screwed the thing.  thanks for your help.

Offline Isaac

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Re: Beta Lead Quit On Me
« Reply #3 on: February 08, 2008, 01:51:01 pm »
It's a bit early to talk about trashing it. Are you getting a power on light? If not, then it almost has to be a fuse.

If you have the light, but no sound, take a cord and plug it into the preamp out. Run the other end to another amp. A power amp or the power amp in would be best, but you're just looking to see if there's any signal at all, right? See if you're getting a signal from the preamp out.

If not, do the opposite, and see if you're getting an output from the power amp. Plug into the Power Amp In on the back with a signal of some kind, be it the preamp out from another amp, a CD player, whatever. Keep the input level low. Remember, you're going to be getting the full gain of the power amp when you do this. If you don't hear anything, turn the signal up slowly.

What all this does is to isolate the problem to either the preamp or the power amp section. That's enough for now.
Isaac

Offline deathfaces

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Re: Beta Lead Quit On Me
« Reply #4 on: February 08, 2008, 09:13:04 pm »
the fuse was dead, i'm going to replace it in the morning and see what happens.

about the preamp in and outs, and the power amp ins and outs.  this page says "Next is the "Master Accessory" set of jacks where an external effects unit can be connected to work with both channels. The "To Accessory" jack can be used as a preamp out - to feed another power amp as an example. The "From Accessory" jack can be used as a power amp input, and it does disconnect the internal preamp."

so if i wanted to use a slave with this amp i'd run a cable from the to accessory of one beta lead to the from accessory of another beta lead (i have two)?  thanks

Offline JoeArthur

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Re: Beta Lead Quit On Me
« Reply #5 on: February 09, 2008, 06:30:03 am »
so if i wanted to use a slave with this amp i'd run a cable from the to accessory of one beta lead to the from accessory of another beta lead (i have two)?  thanks

yes.