I've been using this monitor for last few years.
Symptom started by OSD menu popping on and off randomly by itself. So i tried to clean the touch control area with some cloth but it didn't help.
After 20 minutes monitor started hissing from the back. And then 30-40 seconds later screen started fade off/on like as if i was turning down the brightness that's when i turned it off by power button (hissing stops) and replaced it with spare monitor.
Today i opened up the monitor, excited to repair my first monitor (or big electronics) hoping it's a bad capacitor issue after googling a bit.
When i looked at the main PCB there was indeed 1 1000uF/16V bulged capacitor with small leakage. So i took it out and replaced it by one with the same value from old PC mainboard. Replacement cap measured 995uF, bulged cap measured 540uF on my multimeter.
I assembled the monitor and turned it on but it's still hissing. Picture still showed up though.
Now i disassembled it again and tried to see which component is hissing by powering it up. Sadly i couldn't tell it by hearing and am kinda scared to stand my ear close to this for too long. It sounds like pressure cooker and feels like something is about to explode, lol.
Anyways, I think it's obviously out of my skill level. But i'd love to see thoughts/suggestions from experienced members.
Here is a video of hissing
https://streamable.com/qyav7l
Symptom started by OSD menu popping on and off randomly by itself. So i tried to clean the touch control area with some cloth but it didn't help.
After 20 minutes monitor started hissing from the back. And then 30-40 seconds later screen started fade off/on like as if i was turning down the brightness that's when i turned it off by power button (hissing stops) and replaced it with spare monitor.
Today i opened up the monitor, excited to repair my first monitor (or big electronics) hoping it's a bad capacitor issue after googling a bit.
When i looked at the main PCB there was indeed 1 1000uF/16V bulged capacitor with small leakage. So i took it out and replaced it by one with the same value from old PC mainboard. Replacement cap measured 995uF, bulged cap measured 540uF on my multimeter.
I assembled the monitor and turned it on but it's still hissing. Picture still showed up though.
Now i disassembled it again and tried to see which component is hissing by powering it up. Sadly i couldn't tell it by hearing and am kinda scared to stand my ear close to this for too long. It sounds like pressure cooker and feels like something is about to explode, lol.
Anyways, I think it's obviously out of my skill level. But i'd love to see thoughts/suggestions from experienced members.
Here is a video of hissing
https://streamable.com/qyav7l
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...
Comment