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Luis Martino Ameijeiras
 
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Default Inverter Repair. Still blowing fuses..


"Michael Kennedy" escribió en el mensaje
...
Okay.. I found where I had a short.. My output cap was shorting to
something. I cut the lead off shorter and I no longer have a short and
have stopped blowing fuses... Yey!

I think I may have the wrong value zener. The inverter comes on for a
split second and turns back off. Both Lamps are working now... well at
least they are comming on for a split second..

What now? This is the zener I replaced with a 1N5237b738 (supposedly a
8.2v zener)
http://mikescomputers.homeip.net/LCD/zd2.jpg
Someone told me that this was a 8v2 zener in another post titled SMT Diode
Identification

- Mike


Check that your replacement capacitor is not shorted again. I repaired an
inverter very similar to yours... even the failure mode was the same... the
capacitor going to the CFL charred by itself and shorted. While it was
shorted, the inverter would power on for half second, and then turn off by
itself.

Regarding your Diode question, maybe you will find this page interesting:

http://www.marsport.demon.co.uk/smd/sod80.htm

Towards the end of this page you will find a color chart for SMT diodes. If
my monitor is rendering correctly the colors of the picture you posted, your
diode has the following ring bands RED, BLACK, GREEN. Using the table
provided, that would be a RLZ12B zener diode manufactured by Rohm.

Here you have the datasheet for all Rohm diodes and their voltages:

http://www.rohm.com/products/databook/di/pdf/rlz12b.pdf

As you can see, you really need a 12V zener diode.

I hope all this info helps you.

Good luck!