reversed polarity to Dittel issue

I inadvertently powered up with battery reversed polarity. Seems all
instruments except Dittel FSG 2T survived. Anyone have experience with this?
US repair station?? SZ

On Apr 15, 7:45*am, "Sam Zimmerman" wrote:
I inadvertently powered up with battery reversed polarity. Seems all
instruments except Dittel FSG 2T survived. Anyone have experience with this?
US repair station?? *SZ

I did the same thing on the LS-4 I sold to you years ago. There was a
fuse in the Dittel radio that saved it. The repairman changed the fuse
and all was ok.

Ed Gaddy

The repairman changed the fuse and all was ok.

Some radios have a thermal fuse on the side. It just has to be pushed
and the radio works again. At least some Becker types have this.

Regards, Erik.

The MicroAire radios have an internal "pico" fuse that protects the
unit from reversed power. Ask me how I know ;-) Maybe the Becker has
the same thing.

A pico fuse is about the side of a 1/8w resistor (grain of rice) and
is soldered inside the unit. It is not considered user repairable/
replaceable. While I have been able to replace the fuse, it isn't a
task for the uninitiated without a good small wattage, small grounded
tip, soldering iron. Too much heat and you can lift a trace or scorch
the board. Too big of a soldering iron tip and you might unsolder
more than you intend. A bit of a static spark and the device goes
poof. Sorry to scare anyone but you don't want to toast a very nice
radio.

On Apr 15, 5:14*pm, ContestID67 wrote:
The MicroAire radios have an internal "pico" fuse that protects the
unit from reversed power. *Ask me how I know ;-) *Maybe the Becker has
the same thing.

A pico fuse is about the side of a 1/8w resistor (grain of rice) and
is soldered inside the unit. *It is not considered user repairable/
replaceable. *While I have been able to replace the fuse, it isn't a
task for the uninitiated without a good small wattage, small grounded
tip, soldering iron. *Too much heat and you can lift a trace or scorch
the board. *Too big of a soldering iron tip and you might unsolder
more than you intend. *A bit of a static spark and the device goes
poof. *Sorry to scare anyone but you don't want to toast a very nice
radio.

One time I saw a 1943 Buzzard-Master - someone hooked up
the battery backwards and there was a giant flash from
under the panel ! Maybe look under the panel for one of them
old-style screw fuses and put a penny in there ?

On Apr 15, 7:45*am, "Sam Zimmerman" wrote:
I inadvertently powered up with battery reversed polarity. Seems all
instruments except Dittel FSG 2T survived. Anyone have experience with this?
US repair station?? *SZ

Dittel manual says it has an auto-reset fuse.
See: http://www.wingsandwheels.com/FSG2T%...n%20manual.pdf
Appendix A3

How long did you wait before you tried it again ?
Its a thermal device which has to cool after being abused.

On the bright side, it will be nice and quiet in the cockpit...

Have fun in Perry,
Best Regards, Dave