Amigp tests entering the radio service mode and checks the erc dc values and resets that part and checks the voltage values that are coming on pins 2 and 26 that are for system error and blocks the audio without appearing wrong on the aquipo screen Adan friend I upload an image of the values of ic jvc8034 the original output check if you have the same values to be able to guide you to solve the fault take note you have other values in the image you can see that it is a model similar to yours since I did not get the service manual of this model to upload JVC8034.jpg [263.85kb]