Red light flashing on zoom g2 guitar pedal
Hey, I have seen the same problem in multiples of the Zoom processors; specially those of 505, 505 ii, G1FX, G2 and also, on a Korg (AX9000G) . I somewhere read these gears are designed to decay over time, not sure though.
However, the common symptoms of such issues are Flashing of a dot either at right or left corner, Not remembering which patch/effect it was at before getting turned off and starting over from A1 each time while powered up, Sudden cutting off or dropout of the sound while playing or strumming the guitar or whenever you strike your guitar strings, a sound like buffering comes and restart at once flashing A1, once or twice had shown up 'bt' at display etc. These are all I've heard of.
The reason for this is inappropriate power supply. This mostly happens due to electric voltage bumps and frequent changes of your home amperage and voltage, using inappropriate power supply, providing more current than 350 mili amps or crossing whatsoever ampere limit of your unit and, also, if you are a jerk enough like me who has put one end of the guitar cable at the processor input and that other end of the same cable at the processor output jack and accidentally powered the device on. (That created a chained loop at the audio amplification; eating up a huge amount of current suddenly and burnt the voltage controller of the device at once). My experience says the mosfet ic burns at first and then the resistor is burnt after a few days the mosfet ic dies.
The blinking is mostly for the damage at the internal voltage regulator mosfet ic for which the unit gets unbalanced voltage and tries to explain it by showing up that blinking. There is a 93.76854928 % chance that the resistor carrying the current to the input voltage pin for that voltage controller ic has to be burnt out due to regular and consecutive heating even upto 70 plus degrees for a long period. In most of the cases, the solution should be replacing the voltage controller IC/SMD and also, that burnt resistor right at the start of the circuit board, placed somewhere near the 9v dc jack.
Both the parts are really cheap, both the parts together might cost you around 1 or 2 USD only. Make sure you replace the exact item or the parts equivalent to the replacing dead items. For example, on a zoom 505 ii, the resistor may have been marked as R18 and equivalent to 22 ohms and the voltage regulator ic code is written as
29M33
31*1E
So, make sure to crack the parts' codes properly, if burnt out in case of resistor, check from image or video of the same product or circuit board and crack the color code of that exact parts to find the exact ohms. The soldering work is really easy or take them to someone skilled and they will fix ya. (Well, didn't mean like "they will google")
( XD )
Have a good day.
6/6/2023 9:30:13 PM •
Zoom G2...
•
Answered
on Jun 06, 2023
