Looking at a Sony CRT monitor making these noises and does not turn on. Background noise sounds a little like an electric fan, then it makes what sounds like a metal on metal scraping noise, then it makes a click. The scraping noise and click repeat over and over. Any ideas where to start? I'm thinking this is some kind of shutdown circuit.
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Re: Sony GDM-FW900 Monitor
There are a lot of posts on this model, what area/board is the sound coming from? power supply, high voltage area? -
Re: Sony GDM-FW900 Monitor
Oh noes! Sounds like another one of these bit the dust from loosing vacuum.
But let's verify that. Remove the plastic back shell/casing on the monitor and also the top metal cover so you can see the boards inside the monitor. Now plug in the monitor and have a look at the back of the CRT tube neck (the thin glass part that extends all the way to the back of the monitor) - do you see blue arcs in there? What about spark gap SG902 on the D-board (the board with the flyback transformer and big fat red wire coming out of it and going to the front of the CRT tube). If yes, CRT most likely has lost vacuum, hence the arcing.
If you can, post some pictures of the monitor.
Here's my post on this monitor of that issue:
https://www.badcaps.net/forum/showpo...3&postcount=22Comment
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Normally, I never post repairs this quick after I do them, because… I am usually very slow.
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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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... -
Hi Everyone
Lately I am experiencing the deja-vu incident on one of the led monitor like this.
https://www.badcaps.net/forum/troubl...lashing-on-off
The monitor is HP 27es LED Monitor
https://h30434.www3.hp.com/t5/Deskto...e/td-p/6804692
The monitor will randomly blackout and display no signal and will recover again.
Sometimes need to power and off again to restore the display but... -
Good evening, gentlemen.
I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.
To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
https://drive.google.com/file/d/1L6S...ew?usp=sharing
Things I tried
- Bought a new AC adapter thinking that was the problem but the problem... -
My pc:
10850K stock 4800mhz stock Kraken X73 good temps
2x16 GB DDR4 GSKILL 3000mhz XMP
Seasonic Tx-850 Ultra Titanium
Gigabyte Rtx 3090 Gaming OC
Aorus Z490 Pro Gaming
1 TB SSD
4 weeks ago i launched Metro Exodus Enhanced and during cinematic advertisement part ( 30 fps ), pc just shutdown.
Also monitor flickered with NO SIGNAL 10 seconds after shutdown. So only monitor and pc was affected.
Next i pressed only power button, rebooted again and its fine again. Happened once and i cant reproduce.
Power...
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