Question about Orange Amps Orange RK50TCMKII212 Rockerverb 50 MKII Guitar Combo Amplifier (50 Watts 2x12 in)

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Schematic for orange rockerverb 50 mkii - Orange Amps Orange RK50TCMKII212 Rockerverb 50 MKII Guitar Combo Amplifier (50 Watts 2x12 in)

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My Guitar Research 30R has started to "brown out" after about 20 min of continuous use. It fades to little or no volume. Sometimes it comes back... sometimes not until shut down for awhile.

brown outs are usually power supply issues I don'y have schematic but i would check tube in ps in the old days we would look for leaking capacitors or spray suspect resistor or caps with a spray chill in a can (and be very careful not to hit tubes) defective part will work. Since this is done when amp is on, one need to remember that fatal voltages and currents are exposed. This is not for causal or inexperienced persons.
extreme caution required. (I am providing info but am not responsible for any one doing it)

Jan 12, 2014 | Orange Rockerverb Rk30tc 30watt Electric...

1 Answer

How to play with headphones

If you have a preamp output jack or a headphones jack on the back- those will work. They should interupt the speaker if you are wanting it for practice purposes.

if you do not have those, and want to add one, tap at the control grid of the Phase inverter ECC83/12AX7A which should be common grid to the final preamp tube, which should also be an ECC83/12AX7A and locate the coupling capacitor so you can tap ahead of it with a .1 microfarad 600 WVDC capacitor or one that matches the factory capacitor in series to the new jack, with shielded audio wire/coax to the new jack location, at the tip and the coaxial jacket should go to chassis ground at both ends. The grid is either pin2 or pin7 depending which way they chose to wire it. I do not have an Orange Amp schematic in front of me.

If you want to risk noise at that location, make it interuptable so when the headphones are removed, the circuit completes to the N/C contact of the headphone jack (which opens/opened when headphone plug is inserted.) back to the grid terminal. with that terminal connected by shielded wire back to the grid.

Instead of adding a capacitor, you can use the factory capacitor, just mount a terminal strip next to the phase inverter and move the capacitor to that new terminal tab and the wire to lead to the tip together on that ear, and the return wire from the headphone jack goes to the now vacated tube pin terminal. .

Look to see if on of the filament/heater pins is grounded to chassis- if so, just ground the sleeve contact of the jack. If it is not, determine which pin is closest to chassis ground potential and run the sleeve contact over to that pin. could be either 4, 5, or 9 Make sure to use an insulating headphone jack.

EL34 outputs should never be connected to a headphone.

Feb 06, 2012 | Orange Amps Orange RK50TCMKII212...

1 Answer

Rockaverb 50 amp head. 1/4 inch plug tip broken off and stuck in 8 ohm socket. How do I open head & casing to remove tip. Are there any diagrams available online that show correct procedure.

actually there are a few ways of doing this that require no disassembly ( and i better get a good rateing for revealing these secrets haha ) check it out. take a Q-Tip and break off one of the fluffy heads. Apply some super glue to the end you broke off and shove that into the 1/4"jack and essentially glue it to the qtr inch tip. let this sit for a second and pull. should come right out IF NOT you can also try to find a screw ( usually a wood screw ) and you can thread that into the hole of the tip of the connector. if this doesnt get it out post back so i'll know and i'll walk you through how to remove the chassis and pcb's safetly. good luck!

Sep 04, 2011 | Orange Amps Orange Rockerverb 50 MK II...

1 Answer

Dinasaur dg 10 guitar amp no output.suspect xfmr.power comes on i got 120 volts ac at the fuse.I need a schematic

Transformer failures are RARE... check the rectifier and filter components. For diagram you probably will have to go to Orange... they may be very stingy giving it out as well.

Jul 03, 2011 | Orange Amps Orange TH30H Guitar Amp Head

1 Answer

My Rocker 30 has been working just fine up until now. I go to turn on the amp and I get no sound whatsoever. The tubes and ht fuse are fine. I've looked at some forums online and they say the fuse might be...

Apparently you have tested the tubes on a tester and usually there is a pilot light that would not be lit if fuse was blown.

Common problems are bad jacks and switch contacts on power amp INPUT or INSERT jacks. Also circuit board cracks and bad solder joints are fairly common, especially where volume controls attach to the circuit boards.

More expensive things are things like fried speaker if volume was played too loud. An ohmmeter test of the speaker would tell if the voice coil has blown.

Jul 16, 2010 | Orange Rockerverb Rk30tc 30watt Electric...

1 Answer

My Orange amp recently stopped working, as in no sound

The pilot light means NOTHING other than the switch is on and unit is getting power from a receptacle.

There is an electronic failure that requires servicing and until unit is opened and analyzed we can''t help you further. Take it to a shop or a person experienced in electronic repair.

May 09, 2010 | Orange Rockerverb Rk100htc 100watt...

1 Answer

My Orange amp recently stopped working, as in no sound

Likely the power amp section has had a failure. There are likely several bad components and it will take an experienced electronics person to weed out all the bad parts.

The light has little to do with the condition of the unit. It MAY only indicate that power switch is on or that one of several voltages from a power supply is present.

Mar 24, 2010 | Orange Rockerverb Rk100htc 100watt...

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