My Boss RV-2 is getting WARM...

[Kleber AG]

I got a second hand Boss RV-2 (Reverb) with the original DC adapter, and it looks like new,

But after some time playing with it, it gets warm, I mean the metal enclosure gets warm  :roll: I wonder if its normal or not???

Please, any thoughts, does that kind of circuit is suposed to produce any hot???

Also, when I change between the kinds of reverb (Room/Hall/Plate/etc) It takes like 1 or 2 seconds to deliver the reverb sound again after the reverb change...

Thoughs???
Thanks
Kleber AG

[petemoore]

Warm??? Outside?
 I'd open and run it....being very careful not to cause a short. while...feeling the active components [first thing I'd think to be getting how], and see if any of them are getting hot...for the pedal to actually get warm, there must be some fairly serious heat dissipating [not dissipating] in there somewhere...might run 'forever' that way...
 Another thing to check is the actual supply voltage with the Meter. Should probly be over nine volts, I haven't ever checked a Boss Dapter..Don't know what voltage range to look for there.
 The signal lag, when choosing different parameters sounds like it is just a 'digithing' ... the chip has to run the trailing end of the last command [the effect type your'e coming 'from'] before it can recieve info from your'e signal and assign it to the 'new' effect type. I think longer echoes, reverbs, and especially high feedback settings lengthen this process.
 I know for certain the 'purging' process takes longer on an RP100 [rediculous for stage IMO] than My RV-3, which I leave set on one setting for the most part, partly because there's a 'gappy' [drop in signal or near silence] sound even when stomping the echo on or off.

[Kleber AG]

:shock:  This is weird (at last to me) I opened it and it does NOT have a battery power option (has no battery plug), it's stock, this is why it always power on at the on state of operation (reverb on), the input jack is mono (no switching needed) no input plug needed to power the unit...  :shock:

About the heat issue, I found it comes from a transistor near "D2"(1N4000) series near some electros and the transistor is marked:
2930L
05 79
JRC

Also I measured my two DC adaptors: the Boss one measures 9.4Vdc and the other one: 10.6Vdc

I'm not sure (unfortunately) but It looks like it gets hot with the non boss adapter that puts 10.6vdc out (regulated)

Thoughts? Help?
Thanks Pete...
Kleber AG

[petemoore]

I'd stick witht he BOSS dedicated adapter.

[Mark Hammer]

Yep, many pedals that use digital technology have current requirements that exceed what a 9v battery can deliver for very long.  I gather in some instances, the manufacturer may stick a battery snap in there just so yo can demonstrate it to someone, but the working assumption is that wall-power will be the default condition.

From the sounds of it, the circuit would appear to be drawing maybe a little too much current, which translates into heat in a few select components, which translates into heat in the board.  I'm wondering if the solution doesn't just lie in limiting the current coming from the wallwart with a series resistor?

Alternatively, maybe this is the "normal" operating state of the pedal.  Boss tends to design their stuff around the "standard" technology, including their own power supplies.  If the pedal works fine from a functionalitystance, maybe the warmth, while uncharacteristic of other Boss pedals, is expected in the RV-2?  For me, the first thing to find out is how typical this is.