Sony MZ NH700 Lcd screen problem

[Weltklasse]

Hello am looking for advice and guidance

I have a Sony MZ NH700 and the LCD screen has become intermittent.

sometimes it will operate normally but often will go blank. I can sometime resolve this by taking the battery out for a while and reinserting. is this likely to be a loose connection or is it component failure?

When the screen is blank the controls seem to work however sometimes seem slow to respond. I suppose is my whole unit on the way out? is this LCD issue a know issue?

 

many thanks

 

 

[sfbp]

It may be a screen failure - Jim would know, except that contacting him at the moment is not easy.

However my first thought (if I had the unit in my hand) would be to try a service on the power circuits. I'd clean all the contacts, check that the voltage is getting to the main board, and note whether this problem varies with different sources of power (a regulated PS would help here). Once I got a sensible power supply (i.e. checked that the 3V one Sony gave me is putting out a reasonable voltage under load), I'd do the first couple of adjustments on page 17. (Do the preliminaries on the previous page such as temperature setting, but UNDER NO CIRCUMSTANCES execute the procedure in Section 3-2,  
"Initialize the adjustment value"). At this point the problem may well be solved, however if it wasn't then I would conclude the lcd is itself at fault and give up.

You should find (if you don't have one) a remote with display on it (most should work) to do the testing.