Now there is a handy and safe tube puller / inserter available on ebay, item 254242318237 Easy, simple and safe. A perfect tool for any audiophile or vintage electronics technician.
I noticed one of my tubes are cracked.. was going to buy a replacement Sovtek. Is there any issue with replacing just one, and do I need to do anything else besides just plugging it into the socket?
@@guitartechchannelYes but it's not a "Twin Reverb", it's a "The Twin" as it says on the front. It's indeed the successor to the Twin Reverb II but the amo you are showing is not a Twin Reverb.
Is there any other things that need to be done after you replace the tubes? I always hear making sure and amp is biased before you just turn it on, but I've never really had to work on an amp or replace them myself because the amp needed other fixing as well when I got someone to fix it. But I'm getting some scratch noise and I believe it's a dead tube, and I didn't know if I could just figure out which one is dead and replace it and just be good to go. Thanks for any info brother
It's probably a pre-amp tube. If you're not sure (it's a little scary) about this test procedure, take it to a Fender Authorized service center if still under warranty. If not under warranty, find a good tech. Anyway, test each tube one at a time starting with the smaller pre-amp tubes. Amp off, pull 1st tube, then amp on - is there still noise or did it go away? If still noise, re-insert tube and move to next tube doing the same thing until one of them produces no noise. If this happens, replace with a new tube or swap with another tube (same type) If the noise is gone, that's the problem and needs a new tube. When I got to my 4th tube, the noise went away. I temporarily switched like tubes and it was fixed. I later replaced it with a new tube. This was a brand new amp, but sounds great now. I did not mess with the 4 power tubes. When working correctly, it should be absolutely quiet.
Yeah need to definitely bias power tubes after replacing them unless your using a mesa boogie which doesnt have a bias adjustment, they only sell tubes that match the bias setting they hard set in their amps. I made a biasing vid as well for my twin reverb.
GuitarTech thanks for the information. It's a fairly new amp it started fairly fast after purchasing the amp last year and I've not run it loud really cause apt space.
Larry LeFlore thanks for the advice my friend. Just saw this comment since I didn't get a notification I'll try your advice, I'm hoping it's a preamp tube or something minor
Hello, I did something pretty stupid today and I think I killed my Twin reverb reissue... I plugged the footswitch into the external speaker jack and practiced with it like that until it died. There was a lot of heat, but the amp was on the other side of the room so I dIdn't notice until it was too late. I notice that it was not nearly as loud as usual but thought something else in the chain was causing the volume drop. It is dead now and wont turn on. Have I really killed my amp? Thanks for any help you can provide!
@@justaguy2365 I ended up frying my output transformer. I had it replaced and it cost me about 150euros including parts and labour. It was just a stupid mistake, I was in a hurry to get set up and just reached around the back of the amp feeling for the footswitch input jack... I won't make that mistake again. Other than replacing the tubes (one was microphonic), the amp has been working perfectly since the repair.
![เปิด อาณาจักร หมื่นล้าน "สาระตั้ม" l [Nickynachat]](http://i.ytimg.com/vi/3XE0nPF4YkQ/mqdefault.jpg)
Now there is a handy and safe tube puller / inserter available on ebay, item 254242318237 Easy, simple and safe. A perfect tool for any audiophile or vintage electronics technician.
I noticed one of my tubes are cracked.. was going to buy a replacement Sovtek. Is there any issue with replacing just one, and do I need to do anything else besides just plugging it into the socket?
That's not a twin reverb, but it happens to be the amp I have. Thanks!
...hello, you have "the Twin" not a "twin reverb". Looks totally different than my Twin reverb.
This is the Fender The Twin, the red knob Twin Reverb, the first year they went from hand soldered on aluminum plate to a printed circuit board.
@@guitartechchannelYes but it's not a "Twin Reverb", it's a "The Twin" as it says on the front. It's indeed the successor to the Twin Reverb II but the amo you are showing is not a Twin Reverb.
Is there any other things that need to be done after you replace the tubes?
I always hear making sure and amp is biased before you just turn it on, but I've never really had to work on an amp or replace them myself because the amp needed other fixing as well when I got someone to fix it.
But I'm getting some scratch noise and I believe it's a dead tube, and I didn't know if I could just figure out which one is dead and replace it and just be good to go.
Thanks for any info brother
It's probably a pre-amp tube. If you're not sure (it's a little scary) about this test procedure, take it to a Fender Authorized service center if still under warranty. If not under warranty, find a good tech. Anyway, test each tube one at a time starting with the smaller pre-amp tubes. Amp off, pull 1st tube, then amp on - is there still noise or did it go away? If still noise, re-insert tube and move to next tube doing the same thing until one of them produces no noise. If this happens, replace with a new tube or swap with another tube (same type) If the noise is gone, that's the problem and needs a new tube. When I got to my 4th tube, the noise went away. I temporarily switched like tubes and it was fixed. I later replaced it with a new tube. This was a brand new amp, but sounds great now. I did not mess with the 4 power tubes. When working correctly, it should be absolutely quiet.
Yeah need to definitely bias power tubes after replacing them unless your using a mesa boogie which doesnt have a bias adjustment, they only sell tubes that match the bias setting they hard set in their amps. I made a biasing vid as well for my twin reverb.
GuitarTech thanks for the information. It's a fairly new amp it started fairly fast after purchasing the amp last year and I've not run it loud really cause apt space.
Larry LeFlore thanks for the advice my friend. Just saw this comment since I didn't get a notification I'll try your advice, I'm hoping it's a preamp tube or something minor
Gloves?
what is the OHM setting switch set to
Always wear gloves when changing tubes. No fingerprints or oils allowed.
Not true at all
Thanks, very helpful
What year?
Tube layout are different.
It's a Fender "The Twin" which were produced from '87 till '94 (so not a Twin Reverb)
consulta: no es malo para la valvula tocar el cristal?
Nope doesnt matter at all
You touch light bulbs right?
Hello, I did something pretty stupid today and I think I killed my Twin reverb reissue... I plugged the footswitch into the external speaker jack and practiced with it like that until it died. There was a lot of heat, but the amp was on the other side of the room so I dIdn't notice until it was too late.
I notice that it was not nearly as loud as usual but thought something else in the chain was causing the volume drop. It is dead now and wont turn on. Have I really killed my amp?
Thanks for any help you can provide!
hmm, probably melted the trace on the circuit board near the ext speaker output, you didnt see any smoke?
So how'd it work out?
@@justaguy2365 I ended up frying my output transformer. I had it replaced and it cost me about 150euros including parts and labour. It was just a stupid mistake, I was in a hurry to get set up and just reached around the back of the amp feeling for the footswitch input jack... I won't make that mistake again.
Other than replacing the tubes (one was microphonic), the amp has been working perfectly since the repair.
You shouldn't be touching the tube's with your bare hands. The oil on your hands decrease the life of the tube.