Re: Monitor: Sony SDM-HS74P LCD
Anybody know by looking at the image of the board layout if there're "bleeder resistors" for the capacitors?
If you're wondering what I mean, look here:
[URL="https://www.youtube.com/watch?v=C7qnNMM7Dic"]https://www.youtube.com/watch?v=C7qnNMM7Dic[/URL]
See, I do not have a hand made bleeder resistor for discharging. I do have a screwdriver, naturally. I haven't plugged my monitor in for a couple days. That should be enough time, given what I've read.
Anybody have a suggestion...
forswitch38
Member
Last Activity: 11-08-2015, 11:43 AM
Joined: 09-30-2015
Location: Astoria, OR
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Last edited by forswitch38; 10-03-2015, 04:21 PM. -
Re: Cap Datasheet Depot
Thanks....Leave a comment:
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Re: Monitor: Sony SDM-HS74P LCD
Thanks for the reply. I don't think I looked at them, but they may have been covered. You have to realize by now I'm completely noob with no tools atm. Information gathering right now because it's all I can do and need to do it anyway.
These're "switching transisters"? Could I visible see any damage?
By "lamp assembles" do you mean the ccfl's? How many are there? Four?...Last edited by forswitch38; 10-02-2015, 09:21 PM.Leave a comment:
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Re: Monitor: Sony SDM-HS74P LCD
It's at a stupid angle and hard to get a good picture. I may try this weekend.
I've been reading about switched mode power supplies:
[url]https://www.mikesarcade.com/cgi-bin/spies.cgi?action=url&type=info&page=psrepair.txt[/url]
It mentions in there that switching transisters can "short-circuit, causing
massive amounts of current to be drawn across the transformer and blowing
the fuse." It says this often happens if the capacitors are bad.
Can the switching transisters be damaged...Last edited by forswitch38; 10-02-2015, 09:18 PM.Leave a comment:
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Re: Cap Datasheet Depot
More information is in my thread here:
[URL="https://www.badcaps.net/forum/showthread.php?t=49363"]https://www.badcaps.net/forum/showthread.php?t=49363[/URL]
They're 1000uf 25 volt M(105C) rated. There's a reference to "4(7) 9Y".
All I can say is it looks like "[ ]KY".Re: Cap Datasheet Depot
More information is in my thread here:
[URL="https://www.badcaps.net/forum/showthread.php?t=49363"]https://www.badcaps.net/forum/showthread.php?t=49363[/URL]...Leave a comment:
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Monitor: Sony SDM-HS74P LCD
Before I explain the monitor, I want to say I'm new here. I also am a hardware noob. I've spent most of my life with computers. I've built one and I've programmed software. But I've never soldered on the circuit board or even hacked a graphics card to put a custom heatsink on it. See, at the hardware level, the most I've done is simply oiled some fans.
Now onto the problem...
This one came with a prebuilt computer in 2005. I think in 2010 or 2011 it started shutting off. I was able to keep it working by pressing menu buttons and changing the brightness--if I recall rightly....Last edited by forswitch38; 10-02-2015, 07:51 PM. -
Monitor: Sony SDM-HS74P LCD
Before I explain the monitor, I want to say I'm new here. I also am a hardware noob. I've spent most of my life with computers. I've built one and I've programmed software. But I've never soldered on the circuit board or even hacked a graphics card to put a custom heatsink on it. See, at the hardware level, the most I've done is simply oiled some fans.
Now onto the problem...
This one came with a prebuilt computer in 2005. I think in 2010 or 2011 it started shutting off. I was able to keep it working by pressing menu buttons and changing the brightness--if I recall rightly....Last edited by forswitch38; 10-02-2015, 07:43 PM. -
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Re: Cap Datasheet Depot
Is anyone aware of capacitors which have a "OKY" label on them?
It looks like "[ ] KY".Leave a comment:
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SONY "TFT LCD COLOR COMPUTER DISPLAY" SDM-HS74P
Pictures of the potential bad caps. -
Re: New Members - please post your introductions here
Hi I am trying to fix an old LCD monitor. I thought this forum would be a great resource in my task. I've oiled fans before and tweaked software, but I've never soldered anything or disassembled something as complicated as a monitor. Maybe it's time to learn now.Leave a comment:
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