https://flic.kr/p/23mz5c5
OK, a few days after posting this, the monitor stopped working. Even the power LED doesn't illuminate. I had it on, and, suddenly, a bunch of random colors and such appeared on the screen and then it all faded away. After letting it sit the last few weeks, unplugged, I opened up the case to have a look. I didn't see any obvious expansion in any of the capacitors, and the only suspect area on the PCB was under the tube. It looked to be burned, and, there was some corrosion on the part. The white cylindrical component above has the burns around it.
Sad but it happens. I have a monitor graveyard for the Amiga and I kinda lose a couple every year it seems. I have a 1084 that has just started whistling and another that is giving out a very strange noise. I first had the issue on a Philips, but in those days I knew a guy that could repair them. If you can get it repaired I would cus my Philips that was repaired is still going fine.
Just as an aside I had this Samung flat screen monitor develop the same problem and did get it repaired. I haven't had a monitor last more than a few months after the whistling starts. So depressing. They generally just stop working and go black and lifeless.
I do have one Commodore monitor that refuses to give in. It is like fleurescent red and blue on screen and you cannot read it until I give it a big whack on the side and then she comes back to life. I use it with a C64. Been like it for years.... no whistling though.
