Intermittent Strobe Light

[Cardiff Kook]

Actually battery is 12.9 and drops off at battery when strobe on

 

[wireweinie]

web- i am seeing 12.6 at battery and 12.4 at the power supply in connection. Is that my issue?

Where did you place the leads to measure that voltage?

Web

 

[Cardiff Kook]

Where did you place the leads to measure that voltage?

Web

On battery on pigtail for trickle charger.

At strobe on power in lead with negative clipped to a small part of the wing frame. Not sure what it was.

 

[wireweinie]

Those are good readings, then.

Web

 

[Cardiff Kook]

Those are good readings, then.

Web

So is that an issue? The opposite side has similiar readings and it is operating fine.

 

[wireweinie]

No issue with the voltage.

Do you have a single power supply for all strobes or do you have one power supply each strobe? As you said earlier, you swapped the tube to the other side and it worked. So that leaves the power supply.

Web

 

[Cardiff Kook]

No issue with the voltage.

Do you have a single power supply for all strobes or do you have one power supply each strobe? As you said earlier, you swapped the tube to the other side and it worked. So that leaves the power supply.

Web

one power supply each side. Power supply was brand new 4 yrs ago so hard for me to believe it is shot.

 

[wireweinie]

one power supply each side. Power supply was brand new 4 yrs ago so hard for me to believe it is shot.

OK. So explain to me why it can't be the power supply when you have the correct voltage to the power supply and the tube has been tested good on the other wing.

Web

 

[Cardiff Kook]

OK. So explain to me why it can't be the power supply when you have the correct voltage to the power supply and the tube has been tested good on the other wing.

Web

i cant. I just dont want it to be the power supply.

 

[dgapilot]

So to confirm, move the power supplies side for side and see if the problem follows the power supply!


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[hotrod180]

What brand power units? I'm guessing Whelen or maybe more likely Aeoflash.

 

[Cardiff Kook]

What brand power units? I'm guessing Whelen or maybe more likely Aeoflash.

Aeroflash


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[Cardiff Kook]

So to confirm, move the power supplies side for side and see if the problem follows the power supply!


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Yes. I have to cut out the access panels to do that so need to order covers.

 

[bob turner]

Here is another: power supplies in each wing, both strobes out.

If the owners enlist my aid I will be looking at first the switch, then the breaker and connections, and finally the ground wires, if any. Metal spar, J3.

Any other possibilities?

 

[hotrod180]

If you determine that it is the powerpack, just replace it.
Aeroflash is out of production, but you can still find used power packs on ebay.
Or buy a Whelen replacement--
spruce has an aeroflash-to-whelen cross-reference chart on their website.

Aeroflash To Whelen Cross Reference Chart | Aircraft Spruce

 

[wireweinie]

Here is another: power supplies in each wing, both strobes out.

If the owners enlist my aid I will be looking at first the switch, then the breaker and connections, and finally the ground wires, if any. Metal spar, J3.

Any other possibilities?

Maybe just listen to see if you can hear the powerpacks firing. If you hear the pop and whine then it's most likely a tube issue. No noise, troubleshoot powers and grounds first.

Web

 

[bob turner]

Good point. I just assumed since they both went out at the same time it was a problem a lot closer to the fuselage.