Hello there, helpful forum people!
I am in the process of fixing an old (ca. 1990) Sony BVM1410PM CRT monitor and need some help. The PSU board of this monitor had failed and I had to replace quite a few capacitors and other parts but now - with my limited knowledge - I ran into a wall.
On the board there is a coil choke that has failed (tested with inductance meter) and I don´t know what to replace it with. According to the device´s service manual the part in question is a "Coil, Choke 525 uH (Sony P/N: 1-459-643-11)".
The original part is not available for sale anywhere and I struggle to find a suitable equivalent part. I´m sure someone here has the knowledge to show me what my options are at this point.
I added pictures of the part, the schematic and the boardview. Hope this helps.
Thanks in advance!
I am in the process of fixing an old (ca. 1990) Sony BVM1410PM CRT monitor and need some help. The PSU board of this monitor had failed and I had to replace quite a few capacitors and other parts but now - with my limited knowledge - I ran into a wall.
On the board there is a coil choke that has failed (tested with inductance meter) and I don´t know what to replace it with. According to the device´s service manual the part in question is a "Coil, Choke 525 uH (Sony P/N: 1-459-643-11)".
The original part is not available for sale anywhere and I struggle to find a suitable equivalent part. I´m sure someone here has the knowledge to show me what my options are at this point.
I added pictures of the part, the schematic and the boardview. Hope this helps.
Thanks in advance!
Attached Files
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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