So there I was with a broken GPS and my sight isn't everything either so what to do. Well I found a solution. Have a seat. This is shocking.
I folded a peace of alu foil a few times and fitted it in the little space on the speaker just left from the gps and covered the broken bridge with it. I wont have to tell how difficult this is considering you have to avoid all contacts in this area. So if you try it it's your choice.
Result. A blasting fast GPS that indeed gives me never seen before fixes. This just must be my lucky day. Geocaches here I come. Time to put my external GPS aside again. Nothing beats a mad hatter.