Peavey Bandit Transtube 112 2012 - no reverb

[vifer]

Hi, Im seeking the help of the collective wisdom and knowledge of the group to help me fix a reverb problem on my 2012 Bandit 112.

The issue is I dont have reverb at all. Is the little board with the DSP chip, the reverb board? Ive only just picked this up fully aware the reverb was not working so before i confine myself to a reverb pedal , I thought id give this a shot at repairing.

Can someone suggest possible areas to begin troubleshooting even on component level? Where can i find a schematic for the late model Bandits?

I've also email Peavey customer support for some guidance.

tia

[TomCarlos]

I would start by checking the reverb pan to make sure the wires connecting to the transducers are not disconnected. You can do a youtube search for videos onchecking/testing a reverb pan. Also check the wires going to and from the pan. i believe it is a molex connector that snaps to the bottom of the pc board. Do the wires appear to be intact?

[52 Bill]

I would start by checking the reverb pan...

Does this amp have a pan? He asked about a DSP chip.

Vifer: Do you have the schematic for this amp?

[TomCarlos]

Ooopss... My assumption was that this was Transtube Version 1 (silver stripe) or Version 2 (red stripe).

[vifer]

Does this amp have a pan? He asked about a DSP chip.

Vifer: Do you have the schematic for this amp?

No pan. its the late model with digital reverb.

@ Bill . No I dont have a schematic.

Ive attached some pics of the board that sits above the reverb and boost pots , that I suspect the culprit. Is it worth reflowing solder onto these smd parts with an iron?

[The Dude]

I would start by contacting Peavey for a schematic. Sans/Instead/After that, start by checking power and signal supplied to the DSP board. I imagine there should be 5VDC supplied to the board and probably stepped down to 3.3VDC somewhere onboard, but that's just a guess without a schematic.

[Enzo]

In the absence of a pan, then the DSP card is the reverb, but Peavey also made some amps with DSP effects AND a spring reverb.

[vifer]

I would start by contacting Peavey for a schematic. Sans/Instead/After that, start by checking power and signal supplied to the DSP board. I imagine there should be 5VDC supplied to the board and probably stepped down to 3.3VDC somewhere onboard, but that's just a guess without a schematic.

5v and 3.3 and 1.8v check ok. I could switch the DVMM to AC millivolts and check signal but at this point i think the DSP board is toast. I've done the "touch test" on the signal path and heard the speaker buzzing so im confident the signal is coming in. Gimme a spring reverb pan and analog reverb anytime of the day on SS amps. With pans and discrete components you could source them almost anywhere {OEM} and get the job done. Now Im at the manufacturers mercy to get me amp working again. Even moreso painful if shipping costs ( overseas) just as much as the part itself and sometimes more.

edit: Just like to add this is not a blight on the manufacturer. I love Peavey gear. I have their amps classic series, vypr and guitars. Their backup warranty support and customer service is second to none! What other manufacturer sends out schems overnight?? Role model company in my books and will continue to be my goto place for future gear.