One for the guitar and bass enthusiasts.

[Cultured_Bogan]

I have a Randall RH100 G2 solid state head with a speaker deck. I have had it in my shed for a few years as my house was too small for me to set up a guitar space but as I packed down the spare room to advertise it as a studio space for our sale I decided to plug in my Explorer and have a crack. It turns on, but when the volume is cranked to full it is really, really soft. Is it a blown fuse? Have I done a transistor? Would really like to repair it myself if it is an easy fix.

Thanks in advance.

 

[hobbo1]

I have a Randall RH100 G2 solid state head with a speaker deck. I have had it in my shed for a few years as my house was too small for me to set up a guitar space but as I packed down the spare room to advertise it as a studio space for our sale I decided to plug in my Explorer and have a crack. It turns on, but when the volume is cranked to full it is really, really soft. Is it a blown fuse? Have I done a transistor? Would really like to repair it myself if it is an easy fix.

Thanks in advance.

Was you attempting to play “ smoke on the water “ ?

It’ll be a resistor if the volume won’t crank imo

 

[Goldust]

Nice set that,can get killer sounds out of Randall.
Not quite the same but my old Marshall stack did something similar,never tried to fix it myself.
Got it fixed.cost an arm and a leg
If I had a better knowledge I’d give it a crack
If you’re good with electronics no doubt there would be a YouTube tutorial

 

[Dyloh]

Soft as in low volume? Or soft as in no distortion?

 

[Cultured_Bogan]

I have a Randall RH100 G2 solid state head with a speaker deck. I have had it in my shed for a few years as my house was too small for me to set up a guitar space but as I packed down the spare room to advertise it as a studio space for our sale I decided to plug in my Explorer and have a crack. It turns on, but when the volume is cranked to full it is really, really soft. Is it a blown fuse? Have I done a transistor? Would really like to repair it myself if it is an easy fix.

Thanks in advance.

Was you attempting to play “ smoke on the water “ ?

Nah, stairway to heaven.

Pfft...

 

[Cultured_Bogan]

Soft as in low volume? Or soft as in no distortion?

Plenty of distortion still. You just wind it out and it has really low volume.

I wound up taking the head apart. I've blown both the clean and distortion channel transistors. Nice big smoky marks. Hopefully it can be repaired.

 

[hobbo1]

I have a Randall RH100 G2 solid state head with a speaker deck. I have had it in my shed for a few years as my house was too small for me to set up a guitar space but as I packed down the spare room to advertise it as a studio space for our sale I decided to plug in my Explorer and have a crack. It turns on, but when the volume is cranked to full it is really, really soft. Is it a blown fuse? Have I done a transistor? Would really like to repair it myself if it is an easy fix.

Thanks in advance.

Was you attempting to play “ smoke on the water “ ?

Nah, stairway to heaven.

Pfft...

Cracked board / dry solder joint or a bad resistor ..good luck !

 

[TheDaBoss]

*plays ode to joy aggressively*

 

[TCL]

They are a solid state amp so either you have fried something or you have bad solder joint. Or you could just get rid of it and buy a valve amp.

Is your guitar a Gibson Explorer? They are one of the best looking guitars, great sound as well.

 

[rustycage]

Would love an explorer. Or a Destroyer. But a Firebird.......mmmmm. can't help you with your electronics issues. I just pay the experts.

 

[Cultured_Bogan]

They are a solid state amp so either you have fried something or you have bad solder joint. Or you could just get rid of it and buy a valve amp.

Is your guitar a Gibson Explorer? They are one of the best looking guitars, great sound as well.

Yeah decided to open it up after I started the thread. Two transistors have blown out. Never tested it at full range so wondering how they would have shorted.

It's an Gibson Epiphone, a poor mans Explorer. It still sounds good when it's all cleaned up.

 

[TheDaBoss]

Use a Laney acoustic amp for my sole electric guitar...Ibanez....

Run it thru a boss effects board


Works well for me

 

[Cultured_Bogan]

Use a Laney acoustic amp for my sole electric guitar...Ibanez....

Run it thru a boss effects board


Works well for me

Got an Ibanez EX-1500 with a Floyd Rose locking trem. The guy I bought it off took the original pegs off and put Jacksons on for some unknown reason. the glue let go and the bottom E tuning peg just free spins on the anchor. Need to get it replated as well. Got a Jackson JS-1 Dinky as well, but need to straighten the truss rod.

Also have a cheap steel string and nylon string acoustic, and a Maton EM100 12 string.

 

[TCL]

When you say you had the amp in a shed, was it a typical tin shed where moister and heat are a problem? Also did you have volume and suddenly you lost it or never had volume? Did you smell anything burning or an odd odour?

 

[Cultured_Bogan]

When you say you had the amp in a shed, was it a typical tin shed where moister and heat are a problem? Also did you have volume and suddenly you lost it or never had volume? Did you smell anything burning or an odd odour?

Nah, I just turned it on and it had bugger all volume. I can only guess that there must have been residual moisture from the shed. It was before the recent rains, and it has never been directly exposed to water. No odd odour or anything. I opened it up and it is scarred around the two transistors. Even at low volume the clean channel sounds distorted.

 

[TCL]

Use a Laney acoustic amp for my sole electric guitar...Ibanez....

Run it thru a boss effects board


Works well for me

Got an Ibanez EX-1500 with a Floyd Rose locking trem. The guy I bought it off took the original pegs off and put Jacksons on for some unknown reason. the glue let go and the bottom E tuning peg just free spins on the anchor. Need to get it replated as well. Got a Jackson JS-1 Dinky as well, but need to straighten the truss rod.

Also have a cheap steel string and nylon string acoustic, and a Maton EM100 12 string.

Did those things going wrong with the guitars happen with you and are they all kept in the same part of the house, cause a lot of what your describing happens when instruments are exposed to to much or too little moisture or constant fluctuations between wet and dry.

 

[Cultured_Bogan]

Use a Laney acoustic amp for my sole electric guitar...Ibanez....

Run it thru a boss effects board


Works well for me

Got an Ibanez EX-1500 with a Floyd Rose locking trem. The guy I bought it off took the original pegs off and put Jacksons on for some unknown reason. the glue let go and the bottom E tuning peg just free spins on the anchor. Need to get it replated as well. Got a Jackson JS-1 Dinky as well, but need to straighten the truss rod.

Also have a cheap steel string and nylon string acoustic, and a Maton EM100 12 string.

Did those things going wrong with the guitars happen with you and are they all kept in the same part of the house, cause a lot of what your describing happens when instruments are exposed to to much or too little moisture or constant fluctuations between wet and dry.

Nah the Jackson always had a bent truss rod, I just don't have the right size key to adjust it. It was my first guitar and I knew bugger all about them and just assumed it was normal until I bought the next one. The Ibanez was fine until my sister knocked it over and the tuning peg broke free when I was still living at home (some 12 years ago.)

The Explorer is fine as it is the only electric I owned from new, along with the three acoustics. I also have a cheap Ashton combo amp and that works fine despite being left in the shed also.

The guitars were all kept under a bed inside the spare room as they could be easily hidden. Only the amps were kept in the shed as they took up room.

The Jackson and Ibanez need some TLC. Other priorities took over in life and they got forgotten.

 

[Tatts888]

Not 100% but it could be as simple as your volume control pot has some corrosion- more so if stored as you said. Not too hard to remove and clean up. CRC have a few good products to assist. Pretty sure they are available at Jcar. If you are not confident and in Sydney PM me and I can give You a contact for a great tech

 

[Cultured_Bogan]

Here's a pic of it:


 

[Dyloh]

Yeah if you can fix it yourself, do it but a tech will probably cost ya an arm and a leg just to fix pretty one dimensional solid state amp. Modellers have come a massive way and they are so cheap now. Probably worth going down that route unless your amp has some type of nostalgic value to ya.