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Replacement of another equivelent ic TDA9340PS/N3/A/1923


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My zoom g1x theres no sound.all power are working lcd light are on.but the sound cannot come out.can any one help me..

What letters / numbers that appears on the screen?
If the display is normal, and you can switch to other banks, and can edit each bank, then the problem of no sound, is at the pre-amp IC input, output amp, or CODEC converter.
This is the overall image of G1X inside.zoom-g1x-theres-no-sound-all-power-2ss5ycyvkoajtv035dpuezke-2-0.jpg Next, we zoom-in the middle of picture above.
See the next picture.
IC2 (left) is input pre-amp IC (NJM2100).
IC4 (middle) is the CODEC IC (WM8734).
IC5 (right) is the IC output (NJU7082).zoom-g1x-theres-no-sound-all-power-2ss5ycyvkoajtv035dpuezke-2-1.jpg

Test whether the input IC is working normally, turn ON G1X, plug the guitar, go to BYPASS/TUNER menu. When the TUNER function could work, certainly input IC is not damaged.
Means only two possibilities, namely CODEC and output IC. That is not easily tested, except in specific ways.

May also, there are problems in the input / output socket.
Turn ON G1X. Try the following (see figure below):
  • Test the output socket. Touch pin output socket (right red arrow) with finger / screwdriver / whatever. If sound is heard in the amplifier, the output socket is normal.
  • Test the input socket, Same as above. (left red arrow). (if this happen in this point, problem is clear).

If lcd light are on (as you say), but appearing G1 or d5 or bt, and the system are hang / frozen, this is a different issue to the one described above,and dealt with in different ways too.

References IC datasheet:


Sep 10, 2015 | Zoom Music

1 Answer


If you enter the IC number into Google you can find places that have the original model, so why would you want an equivalent?

Feb 11, 2014 | LG 47LB9DF LCD TV, 47 ViewabImage Size,...

1 Answer

My car won't start after I drove in the rain,what could be wrong? Could it be something electrical like fuses or something that got wet?

possibley try spraying the ignition leeds with some wd40 or equivelent or it could be the imobilezer which is worked from the drivers side door if none of these can you here it prime befor the engine starts can you here the fuel pump there is a relay thats in the boot for the pump check this not normally bad starters prety bomb proof i have a 1994 c180 18 years not had a bit problem with it i would check the few points i have listed above before spending any money hope this helps ivan

Oct 24, 2012 | 2003 Mercedes-Benz S500

1 Answer

Evesham 7211 u18 IC fault

ws-20l is the markings on this IC
As to what it is....that's another story!

Mar 24, 2010 | Evesham Nav-Cam 7700 GPS Receiver

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My water heater is pouring water out of the overflow hole, I turned it off but how can i fix it?

Your pressure relief valve is open either due to an increase of pressure (that is what it is designed to do) or more likely .the spring in the device is weak and requires replacement . pick one up at Lowes and reinstall the same as removal .You will need a pipe wrench or equivelent and some pipe sealing compound.Hope this helps.

Jul 23, 2009 | General Electric GE SmartWater Household...

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1. problem in vertical section .

2. Vertical IC supply capacitor problem.

3. Drypoints in Vertical IC saroundings.

4. vertical IC problem.

Jul 20, 2008 | LG Studioworks 552V 15" CRT Monitor

1 Answer


Try this

Jul 18, 2007 | Toshiba MD24F12 TV

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