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Mend GBC 4250 Power Switch Switches

GBC 4250 Not Powering Up?

I have a GBC 4250 that will not power up. I've changed the power switch, the mother board, the limit switches for the swing cover and deck. Fuse looks good. Anything I've missed? I've got a ton of parts from cannibalized 4250's that we've taken out of service so parts really are not a problem....just out of guesses where else to look for the trouble.

Todd from Learning Shop
April 2012
I fix these machines for a living as a indenpendent service rep.

The most common no power on a 4250 is a blown thermal fuse, which requires the thermal fuse and temperature control board replacement.

what occurs the temp sensor fails and calls for too much heat, and the thermal fuse opens to prevent machine damage.

the thermal fuse and temperature sensor are on a mount thats removed by opening rear drop down cover, remove the idler bar for the lower roll of film its spring loaded push left or right, then remove the 2 screws that are under that bar.

replace both the sensor board and the thermal fuse if your using parts from a scrap machine.

the parts will be spring loaded, hold them down, get someone to help put the screws. it requires you to be on both front and back of machine at same time.

if anyone is around 75 miles of pittsburgh I still give FREE no cost no obligation on site estimates:)

bob haller service and sales pittsburgh pa 412 366 4906
April 2012

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