Kenwood KDC-W4537U

[Mezz]

Hello
I need help about carradio Kenwood KDC-W4537U,the problem is on the display it s flash PROTECT,inside is TDA7850A and i change it with new one but still the same thing,then i check diodes,everything is OK,does anybody have any ideas or advice what can be a problem?

Many thanks....

Bruno

[auto diag1]

je pense que vous avez bien fait de commencé par les TDA .car c'est generalement ce cause ce genre de panne .Je vous propose de travailler sans ressouder les TDA et si ça persiste vous recommencé avec toutes les dios qui vont à la masse

[dvb_gsm]

Hi....

TDA7850A POWER AMPLI......No Power ON.....!!!!!!!!!!

Explind your Probleme..

[TOSHIBARACHID]

Hello
I need help about carradio Kenwood KDC-W4537U,the problem is on the display it s flash PROTECT,inside is TDA7850A and i change it with new one but still the same thing,then i check diodes,everything is OK,does anybody have any ideas or advice what can be a problem?

Many thanks....

Bruno

(PROTECT)
faire un RESET avec un stulo sure le bouton au coin