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NuTone Intercom Photo Gallery > NuTone Model IM / IMA3303 AM FM Radio Intercom > NuTone IM3303 power supply

NuTone IM3303 power supply

The power supply section of the IM3303 is simple and straightforward.  

The red arrow points to the voltage regulator which can fail and should be replaced with a similar component with a higher current rating.

The green arrow points to a hidden diode which should be replaced.

The blue arrows point to the 4 capacitors which will be to be replaced.

The orange arrows point to the two bridge rectifiers which are rarely a problem.