Sony BVM1410PM (CRT Monitor) - Coil Choke Replacement

[FZG]

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!

[FZG]

Re: Sony BVM1410PM (CRT Monitor) - Coil Choke Replacement

Nobody? How far could I be off-value with a replacement part? 525uH seems to be a very unusual value. 470uH and 560uH are more common but I don´t know whether they´ll do the job or not. And what type of coil would be best to use?

[FZG]

Re: Sony BVM1410PM (CRT Monitor) - Coil Choke Replacement

Okay, nevermind. I figured it out myself. I used a Bourns 5256-RC to replace the failed coil and now the monitor is working again, even though the replacement part is ever so slightly out of spec.