Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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marsupialman
 
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Default Behringer Vintager GM110 guitar amp problem!


Hi all - I just joined your mighty forum.

I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise
either through the speaker or the headphone socket, though the On
button glows red as usual. When I switch the amp off, there is about
one second of amplified noise (such as a chosen guitar chord), then
silence.

Has a component, such as the off/on switch, failed?

Is there an easy way for me to fix this problem?

Thanks very much!


--
marsupialman
  #2   Report Post  
DaveM
 
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Default Behringer Vintager GM110 guitar amp problem!

"marsupialman" m wrote in
message r.com...

Hi all - I just joined your mighty forum.

I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise
either through the speaker or the headphone socket, though the On
button glows red as usual. When I switch the amp off, there is about
one second of amplified noise (such as a chosen guitar chord), then
silence.

Has a component, such as the off/on switch, failed?

Is there an easy way for me to fix this problem?

Thanks very much!


--
marsupialman



To give you the short answer, probably not. This might sound like a harsh
reply, but it's not meant in that fashion.
In view of your obvious lack of electronic knowledge and troubleshooting
ability, it would be much cheaper and quicker for you to take the amp to a
qualified repair shop and pay the price for a competent repair.

You suspect the power switch when you should have immediately dismissed it
because the ON light is on, as it should be. The fact that it does in fact
produce sound at all indicated that the amp is being powered on. There is
a malfunction somewhere else in the amp, most likely a bad tube. If you
have access to a tube tester, then by all means, have the tubes checked.
You could check your guitar and cord with another amp to make sure that they
are working OK. Beyond those simple things, it's my opinion that for you to
open this amp and attempt repair, you would risk further damage.

Cheers!!!!
--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in
the address)

Never take a laxative and a sleeping pill at the same time!!


  #3   Report Post  
Porky
 
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Default Behringer Vintager GM110 guitar amp problem!

m -

I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise


Hi, I'm no regular here butt... I can tell you there are no tubes in
this amp. It appears to have blown a major component which will involve
pulling the chassis, searching a mass of tiny components and soldering.
You can use the FX loop to test your output transistors. Plug another
amp or even a CD player or radio, turned down way low, into the return
jack. Report the result here.

John Kogel

  #4   Report Post  
Tom MacIntyre
 
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Default Behringer Vintager GM110 guitar amp problem!

On Sat, 29 Oct 2005 17:30:06 +0100, marsupialman
m wrote:


Hi all - I just joined your mighty forum.

I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise
either through the speaker or the headphone socket, though the On
button glows red as usual. When I switch the amp off, there is about
one second of amplified noise (such as a chosen guitar chord), then
silence.


So as the power internally reduces, the amplifier works? I'd suspect
an over-voltage problem, which could be verified by applying reduced
AC to the (assumedly) linear power supply in the amplifier (or does it
have an external supply?). You'll likely require a technician to sort
this one for you, unless it has a documented history/magic bullet for
this problem.

Looks like a dandy little amp...

Tom


Has a component, such as the off/on switch, failed?

Is there an easy way for me to fix this problem?

Thanks very much!


  #5   Report Post  
marsupialman
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!


Thanks to both of you for your helpful posts! John's right: there are no
tubes in this amp; it's designed to replicate various tube amp sounds.
Which it does remarkably well for the money.

So... yikes... sounds like it's gonna cost me a lot to get it sorted...


But I'll follow John's advice and see what happens. What a great forum!
Thanks again guys.

Porky Wrote:
-

I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise

Hi, I'm no regular here butt... I can tell you there are no tubes in
this amp. It appears to have blown a major component which will
involve
pulling the chassis, searching a mass of tiny components and
soldering.
You can use the FX loop to test your output transistors. Plug another
amp or even a CD player or radio, turned down way low, into the return
jack. Report the result here.

John Kogel



--
marsupialman


  #6   Report Post  
Porky
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!

Tom wrote:
You'll likely require a technician to sort
this one for you, unless it has a documented history/magic bullet for
this problem. Looks like a dandy little amp...


Under that husky exterior rides the flimsiest of circuit boards,
suspended on the plastic jacks and control pots, which barely survives
the bus trip home. Components are known to drop off like leaves from
the trees.

-


I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise When I switch the amp off, there is about
one second of amplified noise (such as a chosen guitar chord), then
silence.


Take it to an electronics training school, or find an old ham radio guy
with lots of patience and good eyesight. I once found a capacitor
rolling around loose under the chassis of a similar beast, that made
the repair job pretty easy. BTW, just plugging the guitar into the
return jack of the FX loop should have made a sound if the problem was
isolated in the preamp. Not likely.

John Kogel

  #7   Report Post  
poi
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!


Porky wrote:
Tom wrote:
You'll likely require a technician to sort
this one for you, unless it has a documented history/magic bullet for
this problem. Looks like a dandy little amp...


Under that husky exterior rides the flimsiest of circuit boards,
suspended on the plastic jacks and control pots, which barely survives
the bus trip home. Components are known to drop off like leaves from
the trees.

-


I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise When I switch the amp off, there is about
one second of amplified noise (such as a chosen guitar chord), then
silence.


Take it to an electronics training school, or find an old ham radio guy
with lots of patience and good eyesight. I once found a capacitor
rolling around loose under the chassis of a similar beast, that made
the repair job pretty easy. BTW, just plugging the guitar into the
return jack of the FX loop should have made a sound if the problem was
isolated in the preamp. Not likely.

John Kogel


  #8   Report Post  
poi
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!

hey. i have the same amp with the same amp with the same problem. i got
it fixed but it broke again. i've had a lokk and i can't see where it
was repaired. i do have some info if any one can decipher what it might
mean;
1.there is power coming from the transformer
2.the speaker works
3.i cant see any thing missing inside
4. the only way to make noise is to turn it off and i get the fade-out.
with different settings the fade-out is different so the amp models
work.

  #9   Report Post  
poi
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!


Porky wrote:
Tom wrote:
You'll likely require a technician to sort
this one for you, unless it has a documented history/magic bullet for
this problem. Looks like a dandy little amp...


Under that husky exterior rides the flimsiest of circuit boards,
suspended on the plastic jacks and control pots, which barely survives
the bus trip home. Components are known to drop off like leaves from
the trees.

-


I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise When I switch the amp off, there is about
one second of amplified noise (such as a chosen guitar chord), then
silence.


Take it to an electronics training school, or find an old ham radio guy
with lots of patience and good eyesight. I once found a capacitor
rolling around loose under the chassis of a similar beast, that made
the repair job pretty easy. BTW, just plugging the guitar into the
return jack of the FX loop should have made a sound if the problem was
isolated in the preamp. Not likely.

John Kogel


  #10   Report Post  
Dave Plowman (News)
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!

In article ,
Tom MacIntyre wrote:
Looks like a dandy little amp...


That's what Behringer does. Make it look good...;-)

--
*Acupuncture is a jab well done.*

Dave Plowman London SW
To e-mail, change noise into sound.


  #11   Report Post  
marsupialman
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!


Dave Plowman (News) Wrote:

Looks like a dandy little amp...


That's what Behringer does. Make it look good...;-)

[/color]

Thanks! To be fair, I did a lot of research on amps like this before
buying this one. Sound quality and versatility was obviously the big
issues, but many users have been lugging this amp from club to club
without anything going wrong. It's meant to be pretty tough. That's why
I'm surprised it's busted.


--
marsupialman
  #12   Report Post  
Jim S
 
Posts: n/a
Default Behringer Vintager GM110 guitar amp problem!


marsupialman wrote:
Thanks to both of you for your helpful posts! John's right: there are no
tubes in this amp; it's designed to replicate various tube amp sounds.
Which it does remarkably well for the money.

So... yikes... sounds like it's gonna cost me a lot to get it sorted...


But I'll follow John's advice and see what happens. What a great forum!
Thanks again guys.

Porky Wrote:
-

I bought a new Vintager GM110 via eBay about a year ago. When the amp
is switched on and my guitar plugged in, there is no output noise

Hi, I'm no regular here butt... I can tell you there are no tubes in
this amp. It appears to have blown a major component which will
involve
pulling the chassis, searching a mass of tiny components and
soldering.
You can use the FX loop to test your output transistors. Plug another
amp or even a CD player or radio, turned down way low, into the return
jack. Report the result here.

John Kogel



--
marsupialman


Hi Marsupialman. Sorry to hear about your amp trouble! The advice
John gives (above) is exactly what I would recommend: Send a
known-good signal to the effects return. This will bypass all of the
input/preamp electronics and present the signal straight to the output
stage. If you still have no output using this test, I would expect to
find a bad power IC or other failed component somewhere in the output
stage.

If you are in need of an authorized repair center, just drop me a line
or give me a call using my contact information below. I'll get you in
touch with the nearest one and get you an estimate. We have over 40
service centers in the US. If you are not in the USA, we have service
centers all over the world and I can assist you in choosing the best
one for your needs.

One last thought: if the unit was purchased in the 12 months, you
should have some remaining warranty coverage from the eBay seller.

Best Regards,


Jim Savery
Global Customer Service & Support Manager
BEHRINGER Group
Tel: +01-425-672-0816 x 111
Direct Dial: +01-425-939-3216
Fax: +01-425-673-7647
IP Phone Ext: 5024

http://www.behringer.com

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