Pioneer DVD Recorder/VCR Combo Issues

[vortalexfan]

Greetings Everyone, the other day I picked up from the local computer repair shop that also doubles as an electronics recycling center, a 2004 Pioneer DVD Recorder/VHS Recorder Combo unit Model No. DVR-RT500 that attempts to power up but then shuts down after the initial power-up attempt, and I mean everything shuts down including the front panel display.

I was told that its a power supply issue by the shop computer shop manager.

When I got it home and took it apart and plugged it in, this large inductor (marked L501_1 on the schematic/service manual) makes a high pitched whining noise which I think that it is either shorted or just failed, and I know that was a very common issue with the Switch Mode Power Supplies in the Panasonic VCRs from the 1990s.

The Problem is that the service manual for this Combo unit doesn't list that part in the parts list and it doesn't say what the purpose is of that part in the service manual.

What I would like to know is, what the purpose is of that part, and whether or not that part could be easily sourced through a parts supplier like DigiKey or Mouser, and what the specs are of that part.

A Screenshot of the section of the service manual that shows that part in the power supply circuit is posted below.

Thanks for your help.