Hello everybody!

I do have a strange problem with one of my Sony Discman I can´t solve by my self. Maybe someone here nows how to fix it, or had similar problems.

My Sony D-100 Discman will not power up until you let him sit with the power Adapter (9V) hooked up for at least 1 hour or more.

Sometimes it will even take longer to bring him back to life. Then he plays without problems.

It seems to be a fault somewhere in the power section but I can´t find it. 

My first thought was a bad cap - but there is not very much in between.

Here is the area of the schematic - maybe someone can give me a direction!

Thanx a lot