TIU

Don,

The little red light on the motherboard will not stay on.

Some questions:

• Does the red LED not come on at all or does it come on and then go off? If the latter, how long does in stay on and does it blink a time or two before it goes off?
• What is the external power supply and does it have a circuit breaker?
• Have you tried powering the TIU from Fixed #1after unplugging the external power supply?

Unplug aux power and just try fix 1 does it work?

Barry Broskowitz posted:

Don,

The little red light on the motherboard will not stay on.

Some questions:

• Does the red LED not come on at all or does it come on and then go off? If the latter, how long does in stay on and does it blink a time or two before it goes off?
• What is the external power supply and does it have a circuit breaker?
• Have you tried powering the TIU from Fixed #1after unplugging the external power supply?

Barry Thanks, my external power supply is an mth-500, using the ESP the red LED come on and goes off  in less than a sec. no blink  light only come on and then off.  Second I disconnected the EPS and connected 18 volts to Fixed # 1. I get the same red LED results, the light comes on and shut off in less than 1 sec. 

Don,

Does this all occur even if nothing is connected to the TIU's channel outputs?

Barry Broskowitz posted:

Don,

Does this all occur even if nothing is connected to the TIU's channel outputs?

Yes

Don,

It sounds as if a trip to a repair person is in order.