Nad C546BEE No power after storm.

[Lynyrd]

Hello.
NAD C546BEE.

No power after storm.
No standby led on front panel.
No 5v_cpu on L103.
I replaced U103,no results.
All Fuses ok.
If I feed 5v of external supply on R202 pin 1 and 2 the orange led ok on front panel But no power on.

Thank you.

SM

NAD C 546BEE SERVICE MANUAL Pdf Download | ManualsLib

 

[astouffer]

Are you getting any voltage out of the transformer windings?

 

[Lynyrd]

in which place?

 

[Lynyrd]

I feed 230v direct on J209.
On J210
Pin 1. 5.55v
2. 5.90v
3. Nothing
4. Nothing
5. 4.13v
6. 4.45v
7. 0v
8. 0.02......0.25vv
9. -0.02........0.06v
10. -0v
11. -0.02.........-0.08v

 

[Lynyrd]

Please

 

[mlloyd1]

what did you learn from the troubleshooting guide on page 38 of the link you posted?

 

[Lynyrd]

Nothing

 

[Lynyrd]

Transformer dead or not?

 

[Lynyrd]

Please

 

[Lynyrd]

Any idea for CPU_5V?

 

[Lynyrd]

R23 was broken.
After replacing Its 3.5v on L3,but no 5v......

 

[Lynyrd]

If U102 can make low voltage?

 

[Lynyrd]

U102 replaced,no results,also 3.52v

 

[Lynyrd]

With external power supply 5v ,no power on