The Acoustic Guitar Forum

Go Back   The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > Acoustic Amplification

Reply
 
Thread Tools
  #1  
Old 01-06-2013, 07:02 AM
$ongWriter $ongWriter is offline
Charter Member
 
Join Date: Jul 2007
Location: Lafayette, TN....near Nashville
Posts: 3,237
Default trouble with Twin Reverb...

I'm sure a lot of you also play electric..so I'll ask this question. My son has purchased "two" used Fender Twin Reverbs since Christmas day from Guitar Center. The first one had one bad speaker..took it back...they got us another one...got it home last night...after playing it for an hour a bad hum developed...After searching on the internet someone mentioned bad tubes...has anyone had this much trouble trying to buy a used amp?....I'm sure most people trade them in when they start giving trouble...I'm trying to convince him to just get a new one but it's $700 more!...any thought?...he is dead set on this particular amp...he's mainly wanting a loud CLEAN tone..and after much research he's settled on this model...but, right now I'm not so sure it's a good idea?...if we replace the tubes does anyone know how much that costs?
__________________
Martin's
42D-18
262-17
54D-28
49-000-18
49-OO-18 shade top
56 OO-18
D-28LSH
OMJM
OM-28 RC
D-28 37'A
M3M
D-18
PRE WAR "J"
Gibson 42 J-35
Gibson 51 J-45
Taylor 717e
Taylor 616e proto
Tak "kc"
Tak SS
Tak New Yorker
Rainsong shorty
Gibson 78 LP Deluxe
Gibson SG
Fender Lacabrinta Tele
Fender p-90 Tele
Fender 51' CS No caster
Fender CS Strat
Fender 73 P bass
Reply With Quote
  #2  
Old 01-06-2013, 07:07 AM
duesenberg duesenberg is offline
Registered User
 
Join Date: Aug 2012
Posts: 30
Default

New tubes are a whole lot less than $700. GC may replace the tubes for you at a reduced rate, or you can ask to swap out speakers between amp #1 & #2.
Reply With Quote
  #3  
Old 01-06-2013, 08:59 AM
clintj clintj is offline
Registered User
 
Join Date: Oct 2012
Location: Idaho Falls, ID
Posts: 4,192
Default

A new set of good tubes will set you back about 200 for a Twin. Lot of tubes in those. A bad hum after it runs a while sounds like a cold solder joint in the ground circuitry that is opening when it gets hot. Could also be a bad capacitor. Most tube problems in newer tube sets come from bad contact in their sockets. Spray a little contact cleaner on the pins and insert and remove them a few times. Then plug the amp back in and give it another try. If you want to try to sort this out yourself, I would suggest talking to the guys at Eurotubes, they have a lot of experience and were very helpful with fixing a noise problem in my HR Deluxe. Or, let GC make it right by you.
__________________
"You don't have to be great to start, but you have to start to be great." -Zig Ziglar

Acoustics
2013 Guild F30 Standard
2012 Yamaha LL16
2007 Seagull S12
1991 Yairi DY 50

Electrics
Epiphone Les Paul Standard
Fender Am. Standard Telecaster
Gibson ES-335
Gibson Firebird
Reply With Quote
  #4  
Old 01-06-2013, 07:42 PM
RockerDuck RockerDuck is offline
Registered User
 
Join Date: Sep 2008
Location: Canton, Georgia
Posts: 1,080
Default

It should be under warranty for 30 days from Guitar Center. Take it back and tell them to fix it. I've bought used amps with problems and I've had them fix it. Tell them it has a bad hum and fix it.
Reply With Quote
Reply

  The Acoustic Guitar Forum > General Acoustic Guitar and Amplification Discussion > Acoustic Amplification

Thread Tools



All times are GMT -6. The time now is 09:41 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright ©2000 - 2018, The Acoustic Guitar Forum
vB Ad Management by =RedTyger=