Hi, Same amp and same problem. I also found it to be oxidation of the contacts. I used Deoxit D100L on a cotton bud and worked it on both contacts for a good minute or so. D100L leaves a protective film to prevent future oxidation. These amps are nearly 40 years old so it takes more time to remove the oxide and dirt. Also, the jack is cheap plastic and there is only a small area of metal contact between the tags and jack plug, so it won't take much to break the contact if there is any oxide there. I made sure there wasn't any fluff left behind from the cotton bud. I removed a strand with tweezers. I put the chassis back and turned it on and all is well. Your recommendation to use a right angle jack is 100% on the money. It was your video that confirmed for me that it was most likely the contacts in this case and not a solder problem so thanks. All the best to you.
I put this Peavey amp in the closet for literally years (inherited from my mom's high school sweetheart..lol). I had given up! I hated to because I love the reverb on it. I tried this and now it works like a charm!! MUCH THANKS!
Thanks very much for this, Mark. My Backstage 208 had the same problem as the one in your video: lack of spring tension in the input jacks. I was uncertain how to fix it until I watched your video, as I never took my amp apart before. I am glad it was so easy, and it plays perfectly now. Kudos!
Loss of tension is a fault seen in equipment that's really old (or had a very hard life) - it means the metal contact spring has lost some of it's elasticity and although this is a good quick fix, it's likely to keep happening and it gets worse over time - eventually, the metal will become plastic and bend back out of place as soon as you put any pressure on the jack. If you find yourself doing it a second or third time, it's worth thinking about spending a couple of dollars (and some fresh solder) on fitting a new jack socket. It's more trouble, but it'll fix the problem for another decade or two.
I noticed that at-least in 1984 a budget amp had extremely good quality parts,the pots are robust, transformer v.good and most of the circuit looks servicable. The PC board is solid too. Those little Peavey backstage amps were used as "pre-amps" into Marshall stacks for a bit of Reverb and extra gain, better than any pedals. Then you could take it home and use it for practice and recording. Brilliant design.
Thank you! I ALMOST ended up desoldering the input jack on this IBZ10, but as I was looking at it I realized that every time a cable got plugged into the input, it would angle the pcb just a hair (no support under the board on that side) and after 10 years or so, it had pushed the enclosure down to the board so the contacts, well, didn't. Just put an old spring under the board, drilled a small hole, put a machine screw through the spring and voila. Figured I'd leave the comment in case anyone else ran into this.
Thanks man, I bought a used Yahama practice amp for my son that had this very problem. Had to pull a plastic cover from the back of the jack but upon fixing the metal spring tab, voila. amp works now.
another tip that may work if this doesn't do it (especially on older amps/guitars) and where you notice that the jack crackles and pops as you spin your lead in it, then get some electrical contact spray and apply some in the hole of the jack. Just worked for me and well pleased as I was thinking I'd have to replace the vintage jack :(. Turns out it was corrosion inside the barrel - when i looked I could see it - rust. Spray fixed it - don't know how long for but at the moment it's completely noiseless.
I have a Dean Markley K100B. I purchased new in 1993, the signal seems like it's starting to need time to warm up before it will actually play consistently. I've sprayed dialectic spray were I can. I've played different guitars thru it so its not the guitar. Any Idea's? Does solid state need time to warm up over age? Rust, etc ? Let me know. Thanks.
I have a Peavey Backstage Plus! Sweet little practice amp but I need to go through all of it with contact cleaner and check all the solder joints possibly. Its super scratchy and cuts out. And, of course, this input jack fix might help also thank you!
Mine is an audition 30, sounds fantastic, sure sheeting enough the number 1 input just failed and provides a nice deep hum. Wiggle it around and it worked then it failed within minutes, wiggled it againg it worked for a few seconds, now I doesn't work at all just a deep solid hum, as if it's no longer grounded. Number 2 input works fine tho. Any Idea's? Thanks, great video.
Thanks for the video. When I push the jack right home I get no sound. When I pull the jack a quarter way out I get sound. In your expert opinion is this the same problem i.e. that silver clip in the amp ( female jack) not connecting with the jack plug? Update. Did what you said. It appears my stereo jacks plugs are too long, . when I push them home that clip does not settle in the recess of the jack plug. Any advice welcome. Cheers.
I've never had this problem on other makes of amp but Peaveys seem very susceptible to it. My Bandit has the same problem, although mine actually was a dry joint.
Thanks a lot! My main problem is where to find and buy the appropriate input jack. I have a n Ibanez TBX15R amplifier. How do i find and buy the correct input jack? Thanks a ton!
looks good. i'll try this... although this looks like a Mono jack, i got a similar issue with an equalizer's input... when it's all the way in, it sounds like the channels are bleeding into each other... and it only works when i pull it out a mm or two... so something must've gotten bent. i know stereo jacks are more complicated, but thanks for this look
Hi Mark, Its 2024...and yes i maybe a bit late to your vid but its giving me the "go ahead boot" that I need to fix my JCM2000 heads input jack fix. Hope things are good with you, will let you know how I get on.
hi mark , i just bought this maniac bass amp , it looks old but it has a nice sound , i kept playing all day when i bought it no problem , but in the next day it started to stop from 15 minutes to 15 minutes , sometimes its on and the volumes are up but it does not make any sound untill i turn it off and on again or something , do you have any ideas !
I have an old fender amp and i'm not sure how to remove the back covering the chassis. I've removed the screws but it still won't come off. What should I do?
Hey man,I have a situation, so i opened my guitar amp, and replaced pots, everything is working fine but when i fit input jack thru its hole (its touching bare metal btw, thats how its factory made) amp wont turn on. As soon as i remove jack and hold it in hand or without contact with metal, amp turns on and works. Can u help me?
Some douche bag stepped on my cord and ever since then I have to mess with the input jack to make my amp work. This is exactly what I need to fix my amp, a 120watt Crate from the 90s. Thanks.
Hi Mark, I bought a used Peavey Vypyr (1st I’d assume) for my son to start learning, and it works fine, however occasionally there’s a crackling sound, although when moving the guitar cable next to the input jack that you were fixing there’s no change in sound. Saying that, the input jack isn’t straight, it actually points a little bit downwards. Any idea what the crackling sound can be? I haven’t opened it yet, but I do own a soldering iron, so I’d be able to fix it providing it isn’t too complicated. I’d greatly appreciate if you could reply and possibly help me fix it for my 13 year old. :) I can take a video of the amp when it’s in use and upload it if that helps. Thank you.
@@nogripes, Hey sorry for a delayed response. I thought that it wasn't guitar because we only just got it and I inspected it. However after you suggested it, I wanted to check it to rule it out, and that when I heard something loose in that port, inside the guitar. Upon unscrewing it, I found a metal part that was loose there and was making those sounds. I know it's from that jack that came unscrewed not long ago, but I am not quite sure what it is for. It looks like a metal circle thingy, kinda wavy from one side. I removed it from the inside of the guitar and my son haven't had any problems since. However I would like to replace that input jack completely. Thank you very much for your suggestion, for some reason I haven't checked it, and probably wouldn't for. long time. Thank you very much, all the best.
How do I fix it if the socket itself came clean off? Can I replace/repair it? I tried to reattach, but it snapped off. So, unless I glue it on, I'm not sure how else I could fix it.
@@nogripes It seems to be plastic. So, not sure that it was soldered on and I don't see any wires. Granted, I haven't taken it apart and opened it up yet.
My audio doesn't cut out like that when I move the input jack. Instead, it just creates a lot of noise, like a loud crackling sound. Do you think it could be the same issue, or is it likely something else?
Back in the 80's I had a T-15, the Backstage Plus and an Arion Stereo Chorus to start with. Respectable for the time, but now days kids can get a far better sounding amp for $100. I am envious of players starting today. They have better cheap gear, and so many resources for learning. Then they take it for granted. I think if I had a distortion pedal to start with I would have been happier.
I bought a Backstage Plus in the mid 80s and loved it. It's a great little practice amp. It doesn't have the best built in distortion but it's not too bad. If you tweak all the knobs you can make it sound nice. I had a MXR Distortion Plus which I usually used with it so I could make it sounds pretty good. It's just not loud enough to play with a drummer unless you mic it and play through a PA.
I have a Peavy Bandit 112 transtube series amp it's second hand and has an oiley smell coming out of it. I can smell it in my bedroom where I sleep, it's bad. Anyone know what the problem is? TIPS? ANY RUclipsRS WHICH DO AMP RAPAIR VID'S?
+Angelo Savioz Most likely cause (and the only liquid found in most amps ) would be electrolyte from a blown or leaking capacitor. Either that, or a previous owner 'fixed' a crackly knob with WD40. Isolate it from the mains supply and open it up and check for residue on the boards, as well as checking if any of the capacitors are bulging or split (google 'blown capacitor' to see what that looks like.) If some turdbrain oiled it, the careful application of electrical degreaser spray will be your friend. If it's a leaking capacitor, it'll need careful cleaning and replacing, which will require like-for-like replacement and some soldering - if you're not confident about it, a good repair shop could fix pretty quickly. Should be pretty cheap, too - a few bucks for parts, plus 15-30 minutes labor... If you need help with the teardown, this video's a pretty good guide. Just be careful to note what goes where when you disconnect cables, and always always ALWAYS check that it's not plugged in to the wall.
Ray Barker can't thank you enough. I get what ur saying totally, I'm going to open it up and check if it's the capacitor if not then will use your advice (electrical spray & soldering etc) and kinda use this vid as a guideline. I'm always playing guitar I love music and want to follow it on through my life. I love this kinda work and some experience with the mechanical side of things providing I don't electrocute myself😂 will be great. Maybe turn this into a Summer Project. Thanks a lot, Angelo musician friend:)
having an issue when my amp cuts out after 5 minutes, it is a really nice 65 watt 19 70s fender in a wood cab and all i have now is a crap chinese no name 10 watt solid state.
U mean fractured solder joint. cold solder is a connection that was improperly soldered and not heated to flow the solder connection on the pin to pc board. all the new junk is wave soldered for labor saving no more hand wired amps unless you buy botique
.. aahmm.. I think that there is more presure now in that piece.. and each time that you put the connector , the piece ... will eventually come loose.. just saying..
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
Update Use DeoxIT D5S6 Contact Cleaner + F5S-H6 FaderLube on Amazon - amzn.to/2PvOLRm
Electronic Contact Cleaner on Amazon - amzn.to/2NtWKeS
Hi, Same amp and same problem. I also found it to be oxidation of the contacts. I used Deoxit D100L on a cotton bud and worked it on both contacts for a good minute or so. D100L leaves a protective film to prevent future oxidation. These amps are nearly 40 years old so it takes more time to remove the oxide and dirt. Also, the jack is cheap plastic and there is only a small area of metal contact between the tags and jack plug, so it won't take much to break the contact if there is any oxide there. I made sure there wasn't any fluff left behind from the cotton bud. I removed a strand with tweezers. I put the chassis back and turned it on and all is well. Your recommendation to use a right angle jack is 100% on the money. It was your video that confirmed for me that it was most likely the contacts in this case and not a solder problem so thanks. All the best to you.
I put this Peavey amp in the closet for literally years (inherited from my mom's high school sweetheart..lol). I had given up! I hated to because I love the reverb on it. I tried this and now it works like a charm!! MUCH THANKS!
Thanks very much for this, Mark. My Backstage 208 had the same problem as the one in your video: lack of spring tension in the input jacks. I was uncertain how to fix it until I watched your video, as I never took my amp apart before. I am glad it was so easy, and it plays perfectly now. Kudos!
Loss of tension is a fault seen in equipment that's really old (or had a very hard life) - it means the metal contact spring has lost some of it's elasticity and although this is a good quick fix, it's likely to keep happening and it gets worse over time - eventually, the metal will become plastic and bend back out of place as soon as you put any pressure on the jack. If you find yourself doing it a second or third time, it's worth thinking about spending a couple of dollars (and some fresh solder) on fitting a new jack socket. It's more trouble, but it'll fix the problem for another decade or two.
Life saver this was exactly the problem my amp had,was an easy 5 minute fix,thank you
I noticed that at-least in 1984 a budget amp had extremely good quality parts,the pots are robust, transformer v.good and most of the circuit looks servicable. The PC board is solid too. Those little Peavey backstage amps were used as "pre-amps" into Marshall stacks for a bit of Reverb and extra gain, better than any pedals. Then you could take it home and use it for practice and recording. Brilliant design.
Thank you! I ALMOST ended up desoldering the input jack on this IBZ10, but as I was looking at it I realized that every time a cable got plugged into the input, it would angle the pcb just a hair (no support under the board on that side) and after 10 years or so, it had pushed the enclosure down to the board so the contacts, well, didn't. Just put an old spring under the board, drilled a small hole, put a machine screw through the spring and voila. Figured I'd leave the comment in case anyone else ran into this.
Thanks man, I bought a used Yahama practice amp for my son that had this very problem. Had to pull a plastic cover from the back of the jack but upon fixing the metal spring tab, voila. amp works now.
another tip that may work if this doesn't do it (especially on older amps/guitars) and where you notice that the jack crackles and pops as you spin your lead in it, then get some electrical contact spray and apply some in the hole of the jack. Just worked for me and well pleased as I was thinking I'd have to replace the vintage jack :(. Turns out it was corrosion inside the barrel - when i looked I could see it - rust. Spray fixed it - don't know how long for but at the moment it's completely noiseless.
Very true. Works a treat.
I have a Dean Markley K100B. I purchased new in 1993, the signal seems like it's starting to need time to warm up before it will actually play consistently. I've sprayed dialectic spray were I can. I've played different guitars thru it so its not the guitar. Any Idea's? Does solid state need time to warm up over age? Rust, etc ? Let me know. Thanks.
OMG! That was my very first amp; haven't seen one in years...
Thanks! Fixed my Marshall Valvestate VS102R with this video.
Thank you!!
Hey Mark ,thank you very much for sharing your knowlodge!
My amp is fixed now 😀
Greetings from São Paulo ,Brazil .
Just what I have been looking for getting it out of the amp. Thanks for video.
Thank you so much! I tried this on my amp and it worked. I’m psyched!
I have a Peavey Backstage Plus! Sweet little practice amp but I need to go through all of it with contact cleaner and check all the solder joints possibly. Its super scratchy and cuts out. And, of course, this input jack fix might help also thank you!
Mine is an audition 30, sounds fantastic, sure sheeting enough the number 1 input just failed and provides a nice deep hum. Wiggle it around and it worked then it failed within minutes, wiggled it againg it worked for a few seconds, now I doesn't work at all just a deep solid hum, as if it's no longer grounded. Number 2 input works fine tho. Any Idea's? Thanks, great video.
Incredibly helpful.
The fx return on mine pulled the tip of a cable off and it fell inside the amp head, would it be safe to use until I get round to removing it? Thanks
Thanks for the video. When I push the jack right home I get no sound. When I pull the jack a quarter way out I get sound. In your expert opinion is this the same problem i.e. that silver clip in the amp ( female jack) not connecting with the jack plug? Update. Did what you said. It appears my stereo jacks plugs are too long, . when I push them home that clip does not settle in the recess of the jack plug. Any advice welcome. Cheers.
Thanks ! This worked for my marshall valvestate 8080 from 1991.
Nice! I just found a Peavey comp 15 on the street and took it home and apparently it has the same problem, I'll try to fix it myself
I've never had this problem on other makes of amp but Peaveys seem very susceptible to it. My Bandit has the same problem, although mine actually was a dry joint.
I really liked the cold fix better. Thanks
Thanks a lot! My main problem is where to find and buy the appropriate input jack. I have a n Ibanez TBX15R amplifier. How do i find and buy the correct input jack? Thanks a ton!
Exactly what i needed for my little samick 10-watt practice amp. Thanks man!
i found that a lot of open back amps will agree to lay on its side while removing the PCB chassis.
i hope this helps ya.
Thanks man ! I just fixed my 50watt peavy micro amp
my ibanez input isn’t getting any sort of connection at all, would it be worth trying to fix myself or should i just replace the input?
looks good. i'll try this... although this looks like a Mono jack, i got a similar issue with an equalizer's input... when it's all the way in, it sounds like the channels are bleeding into each other... and it only works when i pull it out a mm or two... so something must've gotten bent. i know stereo jacks are more complicated, but thanks for this look
Hi Mark,
Its 2024...and yes i maybe a bit late to your vid but its giving me the "go ahead boot" that I need to fix my JCM2000 heads input jack fix.
Hope things are good with you, will let you know how I get on.
hi mark , i just bought this maniac bass amp , it looks old but it has a nice sound , i kept playing all day when i bought it no problem , but in the next day it started to stop from 15 minutes to 15 minutes , sometimes its on and the volumes are up but it does not make any sound untill i turn it off and on again or something , do you have any ideas !
Thanks works a treat
I have an old fender amp and i'm not sure how to remove the back covering the chassis. I've removed the screws but it still won't come off. What should I do?
To avoid destroying it hook the cable under the handle on the amp.
Thank you so muchgratitudefrom Richmond Indiana :)
Thank you
I have a nashville 112 i use for my pedal steel amp and the speaker cables are very short. How can i replace the wires cominf out od the amp? Thanks
Thanks, I got this crate amp and it had this problem, thanks for the easy fix.
Haha I had the same problem with a 25 watt peavy amp! Thanks :)
I can’t get my peavey vypyr thing to come out, what should I do?
where can i get the replacement jack for this amp?....mine is way beyond this repair.....
My amp is buzzing and i don't get any other sounds coming through please help!
Hallo, have you got a schematic or circuit plan for MG50CFX? and if yes. would you send it to me??? greetings Ron.
www.amprepairparts.com/schematics.htm
This is a very useful video and it helped me with my amp
Perfect! I get repair the input jack... THANKS!!!
Does this cause amp buzzing if it is loose
Hey man,I have a situation, so i opened my guitar amp, and replaced pots, everything is working fine but when i fit input jack thru its hole (its touching bare metal btw, thats how its factory made) amp wont turn on. As soon as i remove jack and hold it in hand or without contact with metal, amp turns on and works. Can u help me?
RTV on the circuit board components to prevent movement..Its not "hot Glue".. If the input jack is old, it needs to be replaced...not whacked.
Some douche bag stepped on my cord and ever since then I have to mess with the input jack to make my amp work. This is exactly what I need to fix my amp, a 120watt Crate from the 90s. Thanks.
If i want to replace the audio jack what do i search for to find and order one?
Hey this was very helpful. Did you end up resoldering and other boards in another video? I would like to see that done.
Excellent! I think you just saved me at least $65!
Mine has fell back in the guitar so how do I fix it
Hi Mark, I bought a used Peavey Vypyr (1st I’d assume) for my son to start learning, and it works fine, however occasionally there’s a crackling sound, although when moving the guitar cable next to the input jack that you were fixing there’s no change in sound. Saying that, the input jack isn’t straight, it actually points a little bit downwards. Any idea what the crackling sound can be? I haven’t opened it yet, but I do own a soldering iron, so I’d be able to fix it providing it isn’t too complicated. I’d greatly appreciate if you could reply and possibly help me fix it for my 13 year old. :) I can take a video of the amp when it’s in use and upload it if that helps. Thank you.
@@nogripes, Hey sorry for a delayed response. I thought that it wasn't guitar because we only just got it and I inspected it. However after you suggested it, I wanted to check it to rule it out, and that when I heard something loose in that port, inside the guitar. Upon unscrewing it, I found a metal part that was loose there and was making those sounds. I know it's from that jack that came unscrewed not long ago, but I am not quite sure what it is for. It looks like a metal circle thingy, kinda wavy from one side. I removed it from the inside of the guitar and my son haven't had any problems since. However I would like to replace that input jack completely. Thank you very much for your suggestion, for some reason I haven't checked it, and probably wouldn't for. long time. Thank you very much, all the best.
How do I fix it if the socket itself came clean off? Can I replace/repair it? I tried to reattach, but it snapped off. So, unless I glue it on, I'm not sure how else I could fix it.
@@nogripes It seems to be plastic. So, not sure that it was soldered on and I don't see any wires. Granted, I haven't taken it apart and opened it up yet.
My audio doesn't cut out like that when I move the input jack. Instead, it just creates a lot of noise, like a loud crackling sound. Do you think it could be the same issue, or is it likely something else?
BlaziN Gaming I've been having this same issue with my backstage plus
I am having a problem with my input jack for my channel footswitch on the back of my hughes and kettner attax 80
Thank you very much. I found this really helpful.
Thnx mate. Nice work
How can i repair mine? The problem of my amp is when you turn and turn the cable it always gives scratchy noisy how can i repair??
Nice informative vid! Gracias!
My first amp was a Peavey Backstage Plus. Hated that thing.
Back in the 80's I had a T-15, the Backstage Plus and an Arion Stereo Chorus to start with. Respectable for the time, but now days kids can get a far better sounding amp for $100. I am envious of players starting today. They have better cheap gear, and so many resources for learning. Then they take it for granted. I think if I had a distortion pedal to start with I would have been happier.
Ya This app is made in the USA and will last forever unlike that cheap crap from china your buying for a 100 dollars.
I bought a Backstage Plus in the mid 80s and loved it. It's a great little practice amp. It doesn't have the best built in distortion but it's not too bad. If you tweak all the knobs you can make it sound nice. I had a MXR Distortion Plus which I usually used with it so I could make it sounds pretty good. It's just not loud enough to play with a drummer unless you mic it and play through a PA.
I have this exact amp and had this exact problem! thank you!
great footage
Would this work for a crate Excalibur 220 solid state?
It depends on the design. But resoldering and/or bending the tip of the jack is a universal fix.
Can you purchase a replacement jack?
Jack Miller yes.From Amazon
My amp button turn on and off is loose how can i repair it?
Thank you
Very good vid. Well done. Thanks.
a peice of the cord got stuck in my amp pls help
thanks
thanks man...
I have a Peavy Bandit 112 transtube series amp it's second hand and has an oiley smell coming out of it. I can smell it in my bedroom where I sleep, it's bad. Anyone know what the problem is? TIPS? ANY RUclipsRS WHICH DO AMP RAPAIR VID'S?
+Angelo Savioz Most likely cause (and the only liquid found in most amps ) would be electrolyte from a blown or leaking capacitor. Either that, or a previous owner 'fixed' a crackly knob with WD40. Isolate it from the mains supply and open it up and check for residue on the boards, as well as checking if any of the capacitors are bulging or split (google 'blown capacitor' to see what that looks like.)
If some turdbrain oiled it, the careful application of electrical degreaser spray will be your friend. If it's a leaking capacitor, it'll need careful cleaning and replacing, which will require like-for-like replacement and some soldering - if you're not confident about it, a good repair shop could fix pretty quickly. Should be pretty cheap, too - a few bucks for parts, plus 15-30 minutes labor...
If you need help with the teardown, this video's a pretty good guide. Just be careful to note what goes where when you disconnect cables, and always always ALWAYS check that it's not plugged in to the wall.
Yup... could be a cap. Never heard of that happening before like that though. Maybe take it to a pro if you have the money.
Thank you so much Ray Barker. Great help, will check it out.
Ray Barker can't thank you enough. I get what ur saying totally, I'm going to open it up and check if it's the capacitor if not then will use your advice (electrical spray & soldering etc) and kinda use this vid as a guideline.
I'm always playing guitar I love music and want to follow it on through my life. I love this kinda work and some experience with the mechanical side of things providing I don't electrocute myself😂 will be great. Maybe turn this into a Summer Project. Thanks a lot, Angelo musician friend:)
having an issue when my amp cuts out after 5 minutes, it is a really nice 65 watt 19 70s fender in a wood cab and all i have now is a crap chinese no name 10 watt solid state.
Can opening my amplifier like this electrocute me and kill me?
U mean fractured solder joint. cold solder is a connection that was improperly soldered and not heated to flow the solder connection on the pin to pc board. all the new junk is wave soldered for labor saving no more hand wired amps unless you buy botique
.. aahmm.. I think that there is more presure now in that piece.. and each time that you put the connector , the piece ... will eventually come loose.. just saying..
I had same problem with guitar jack lol
Hmmmm gowing to my laney amp
my audio interface is doing this with the headphone jack >.
This mustt be with all peavy's
man they make things so cheap now made in Chinacrap one day when they come to rule us remember the stuff you bought
Ok
My input jack is completely busted. This video has the wrong title. Did nothing but annoy me.
Lol not an official approved fix..
Thanks