Gretsch 6160 Grille Cloth
Got a Gretsch 6160 Chet Atkins here. Not a scrap of grille cloth left on it. I'm assuming the original cloth will be unobtainable at a sane price. Its not a collectors piece, its a working musicians...
View ArticleAmpeg SVT-4 Pro heatsink question
Working on a project SVT-4 Pro because I am a masochist and have run out of less frustrating projects to work on. I found shorted output FETs on Channel B, after removing those Channel A voltages...
View ArticleBest Bench Light For Audio Repair
I'm hard on my desk lighting...both the magnifier and the can lights are those articulating metal contraptions with springs. I'm always bending and pulling and twisting it's no wonder they don't stay...
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Marshall JCM800 Model 4210 combo
Good morning to everybody...had this come in for repair and it has been in storage for at least 15 years...anyway, went through the usual stuff....had to replace ALL the filter caps...bad connections,...
View ArticleNad c325bee hifi amp
Hi I have this nad. At switch on it goes on for 2 secs then into protection Both channels are work at switch on and you can hear music before into protection node Puting a signal from the gen in I can...
View ArticleAcoustic Research ARS300 or ARS300
Hi all I'm in need of a schematic for this subwoofer. Please! Any help will be appreciated.
View ArticleGibson BR-9 OT
So I got this Gibson BR9 in a big batch of parts I acquired a while back. No tubes, no power cord, no cabinet which also meant no speaker and thusly no output transformer. But the PT is good and...
View ArticleSnubber caps on preamp tubes...
Is there a characteristic noise a snubber cap might make when it breaks down? These are the small, high voltage caps usually seen on preamp tubes going from plate to cathode and are very typically seen...
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'94 Evil Twin issues
One of these came in with the issue of "ticking/motorboating after an hour" I played it for a bit and it sounds great, all 3 channels. I put it on the bench and now the two higher gain channels(pushed...
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Behringer X2442USB - Too Many Screws
Well, I've done it again. I have a Behringer X2442USB mixer that had a loud hum, which suggests the power supply. After I took it apart, I discovered that the 1000uf and 470uf caps were bad (bulging)....
View ArticleDOD FX90 Delay Screech Problem (Rev H Schematic Needed)
Trying to fix a DOD FX90 Delay pedal. It works, but emits a screech (feedback) when the Mix control is turned almost all the way clockwise. Turning any of the 3 internal trim pots to any setting, has...
View ArticleMarshall 2103 Cold Maximum Bias Mystery
It's a 1977 2103. Anode voltage measures 475. I'm out of adjustment on the trim pot at around about a maximum 16ma of anode current. The amp is a UK spec model, running EL34s. The previous owner had...
View ArticleBest video Conferencing Apps
Hi guys, anyone here used video conferencing apps before? I'm looking for the best one for free. There have many options like skype, hangout, zoom but which one is better. Thanks
View ArticleTape motor won't turn...
...clockwise, but will turn counter clockwise. Unfortunately it needs to run clockwise to move the tape. Got a Rexer RTE3000, similar to a Roland Space Echo supposedly. motor is getting proper -15...
View ArticleWhats the cause of volume cut out?
What causes volume to cut out? i am testing my controls out on the vibrato side of my Super Reverb(ab763) and noticed that the volume turned up to nine and treble turn up to seven and mids at seven,...
View ArticleBOSS AW-3 problem
Hello everyone! Got this one but something is wrong with it. When you plug something into it (guitar or bass input happens alike) light turns on, sounds pass through it (seems clean but who knows) and...
View ArticleYamaha EM-150ii power amp repair
Dear all, I’m wondering if any of you good folks In this forum might be able to help. I’m repairing an old Yamaha powered mixer for my son to use. The story so far: Cleaned all pots, repaired or...
View ArticleFender Concert-Amp parts list
Hello folks, Does anyone have a complete parts list for this 'newer' Fender Concert-Amp 1x12 combo? The dude received it with almost no noticeable shipping damage yet ALL the pots are either open or...
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Peavey Windsor Doug Hammond Mod Phase Inverter
I'm in the process of converting a Peavey Windsor 100W head to a quasi-JCM800 according to the "Doug Hammond" mods. https://www.aronnelson.com/gallery/m...H/amp/windsor/ Preamp is working fine as far...
View ArticleHi guys, Im new here and need your help! Diagram for Randall Rx75rg2
Im looking for a diagram for a Randall RX75rg2 , I cant find one anywhere, is it the same as the RG75? Whats the difference between the RX75 and the RG75? Thanks for any help guys.
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