Why is my LED cinema display switching on and off?
I've a problem with my 24" LED cinema display. The display is constantly switching on and off. I've used the Apple Technician Guide to check out whats wrong. I was going step by step trough it. What i found out is:
The volltage between TP11 and GND is not stable. It moves constantly between 22.7 - 23.2 VDC.
Also the connector cable voltage (Pin 1 and GND) from the power supplay is moving constantly between 14.3 - 14.8 VDC.
All other voltages are stable and in the needed range. It looks like the power supply is somehow not working correct.
On the power supply unit its is no damaged part or short visible.
So before ordering a new power supply for 250$ from US to Switzerland my questions:
- Can somenone confirm that most likely the power supply has to be replaced?
- Is it possible to check and maybe repair the power supply itself?
Thank you very much in advance for any help!