Hey there! I bought this Peavey Express 112 to leave it at my music school as a students amplifier, it cost me 35eu, so nice deal there, the clean seems to sound mostly good. I cleaned all the pots and reverb connectors and now reverb sounds good, also the seller told me the amplifier wouldn't switch to drive channel, and yes it doesn't, with the tester the switch seems fine. I found that there is a resistor burnt, R101 is completely fried, so i removed it but I don't have a replacement yet,...

I have Germanium transistors knocking about as in the picture and some AC128 that I can't find at present. :roll: In my hand there 10 red dot, just the 2 white dot and a roll of OA47 diodes maybe 500 or more. Are these transistors NKT275 as they were bought here in GB back in the early 1970s? This site goes on & on about Fuzz Face diodes and about 10 page downs they mention red and white dots on canned transistors.

I might have more somewhere as I have a lot of older components like...

Greetings! Been looking for pictures of this thing with no luck. Was wondering if anyone would mind taking pictures of one of these? Thank you!

I've made a huge mistake.

I wanted to be able to use the power plug instead of the battery, but the power jack wasn't working. These have a plug style that looks like a headphone plug. I opened it up, made some very minor changes to the power wiring and now that power jack works.

Fast forward a few months and one day my PDS 1700 makes no sound. I try battery power, and plug power, and I desperately try and remember exactly what I changed with the wiring. I don't remember what I did. I have...

Everybody knows that a TS sounds horrible into a Fender, while it sounds great into a Marshall.
Also, everybody knows that a (tube) amp on the often quoted onset of clipping masks a lot of the harsh tones produced by dirt boxes.

Stacking distortion pedals can mimic that. I cannot remember the reason (probably one of Wampler's blogs) for getting the Euphoria,
but this really excels at this job - mimic-ing the amp break-up. I like to use the center setting - all diodes off.

The interesting...

Had one of these show up for repair with intermittent signal issues, initially saw a cheapo looking 22uf that I desoldered to replace, then while moving the board around to get photos, found the actual issue: poor soldering on one of the pot lugs allowed a lead to come loose and finally pop out entirely when presented with a small amount of direct physical interaction.

Transistors are 2N3906, blue caps are 47n, 22n, big red cap is 100n. Didn’t bother removing the knobs to get a look at the pot...

Hey, peeps.

I know this isn't the hottest topic for switching, but I haven't seen too much info, or even a schematic for this, so I decided to draw one along with a smaller board. The original board was found here, so would be useful to have it as a complete project file rather than segments posted over the internet.

I appreciate the schematic will probably need some attention to clarify pins etc.

(original board layout by andregarcia)

J

Hi all!

I searched for it but no dedicated post was made on this effect pedal. There is one on the 'Probe series' but all probe pedals are discussed there.

I got one in for some TLC and to add a LED. The owner makes a lot of nice noise music but in the wash of his playing he couldn't hear if the pedal was on or off. I added an LED to the pedal (and a DC jack / he just cut a hole in the side to get a wire in)

You can find pics and a schematic in my blog; check the link in my sig.

I traced...

Hello all, This is my first post!

I've been trying to sign up to the ampgarage forum, but my account hasn't been verified. I've emailed a good few times, but to no avail.

Please can someone prompt or maybe nudge the forum admins, as I've got a few things to post, and in need of help.

Thanks,
J4mes

So I am currently listing my Orange Rockerverb 100 MKII + ppc212 for 1650€ and I have been recently offered a trade with an Hiwatt dr103 reissue from 2009 + fane 4x12 cab. I would have to add 700€ on top

What you think about it? Would you go for it or pass? I am bit puzzled

The rockerverb clean channel to me is meh, right now I am not using the dirt channel at all and I am bypassing the preamp by plugging a fender valve preamp in the return

TS9B Reverse engineering,Some one help?
All is ready...Waiting for east wind🧐
TOP.jpg
TOP(refer).jpg
Down (invert).jpg
Blend.jpg
Device Values_TS9-B_Datasheet_01.png

Hello,

unfortunately i have a problem with my aion oceanid build. I built the pedal exactly as described in the documentation except for two capacitors C7 + C18. I substituted these with “Styroflex” capacitors of the same value. (This shouldn`t make any difference?).
The pedal works as it should except for there is amplification with all knobs on zero (so the signal is louder when the pedal is turned on). As far as I can tell all the other functions are working therefore there is an increase...

with a thousand clones on the market, I think this really is the way to go... staying true to your own original

Figured I’d take a few pics of this before I let it to. Not a bad sounding unit at all. Darker than most pt2399s based delays I’ve used but it has a darker vintage analog delay tone “think dod FX90 or any old Reticon units pushed to their max. Modulation was also nice. Just have too many delays. Only changed I noticed with the chips is a tl072 used instead of a burr brown. Even has voltage regulator and preamp trim.

I'm not sure what I'm doing wrong with this switching board. How can I silence the popping?
bypass.png
It's a board that powers the pedal, switches the LED and switches the effect circuit. When it is off the in tip shorts to the out tip and the effect input is grounded.

I've got a 1M Input impedance/bleed resistor on the input after the IO/IN at the beginning of the circuit. I'm thinking that I should go buffered bypass anyway but in the meanwhile I'd like to figure what is causing this...

hey guys.
I have some germanium transistors with oxidation on the terminals, and the cover also has a little oxidation.
I'm currently scraping the terminals with a craft knife.
The question is... is there any product that helps remove oxidation without damaging the transistor?
grateful