Hi,This model no. is known for
AC power adapter problem. Pop noises, flashes of the screen is an indication of out-of-regulation condition on its power supply. If there's no LED light lit, then high chance that the fault came from the
AC power adapter.This model no. used AC power adapter with a 12 Volts output feed to the unit. You have to confirm the 12V output using the multimeter set in DC measurement.If the 12V output voltage is not present, then you have to replaced it with new one. This model no. is already discontinued, only substitution is available online which will work also for your unit. You may inquire/call Sears hotline no. (
1-888-213-5824) to confirm and order the AC Adapter.Please let me know if the Adapter is intact to assist you further.Please rate only if you feel I've gave you the best answer. If you have any question, please let me know.Have a nice day!Jdvillanueva