seat ibiza sound cutting out

[sparkle]

hello friends

I have seen of these older seat Ibiza units over time . the unit with heater controls built in . fault with this one is sound cuts out every few seconds .
ive checked for dry solder but cant see any .........any help for fix ?

gracias !

[attilaa0]

It is made by Grundig? This is the radio?If yes must clean the PCB,Clean the brown colour spots .If not understand make for us a good quality photo of PCB and i show you.

[sparkle]

yes , this is unit .
I try to clean all brown spots but still this fault remains. I will try again