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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Dell monitor - invokes factory reset at boot.
In the past week, my Dell monitor has developed the habit of doing a factory
reset when the PC is booting up. I wouldn't mind - but it gets it wrong and leaves the image shifted to the right. Doing the factory reset manually corrects it, but its a hassle. I'm wondering if I clicked something I shouldn't have, or the monitor is on its way out. Its no biggie - I found the monitor in the first place, and since then scrounged a better one on Freegle, I'd just like to know what's going on. Thanks. |
#2
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Dell monitor - invokes factory reset at boot.
On 12/17/2016 1:52 PM, Benderthe.evilrobot wrote:
In the past week, my Dell monitor has developed the habit of doing a factory reset when the PC is booting up. I wouldn't mind - but it gets it wrong and leaves the image shifted to the right. Doing the factory reset manually corrects it, but its a hassle. I'm wondering if I clicked something I shouldn't have, or the monitor is on its way out. Its no biggie - I found the monitor in the first place, and since then scrounged a better one on Freegle, I'd just like to know what's going on. Thanks. it's almost always bad caps. |
#3
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Dell monitor - invokes factory reset at boot.
On Sat, 17 Dec 2016, Benderthe.evilrobot wrote:
In the past week, my Dell monitor has developed the habit of doing a factory reset when the PC is booting up. I wouldn't mind - but it gets it wrong and leaves the image shifted to the right. Doing the factory reset manually corrects it, but its a hassle. I'm wondering if I clicked something I shouldn't have, or the monitor is on its way out. Its no biggie - I found the monitor in the first place, and since then scrounged a better one on Freegle, I'd just like to know what's going on. Thanks. I found an Acer LCD monitor lying on the sidewalk, in front of a grocery store actually, and all seemed fine, but if I left it running, it would reset, and display the Acer logo. I didnt' see any obviously bad capacitors, but I changed the electrolytic ones at the output of the power supply, and all was fine. Michael |
#4
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Dell monitor - invokes factory reset at boot.
"Michael Black" wrote in message xample.org... On Sat, 17 Dec 2016, Benderthe.evilrobot wrote: In the past week, my Dell monitor has developed the habit of doing a factory reset when the PC is booting up. I wouldn't mind - but it gets it wrong and leaves the image shifted to the right. Doing the factory reset manually corrects it, but its a hassle. I'm wondering if I clicked something I shouldn't have, or the monitor is on its way out. Its no biggie - I found the monitor in the first place, and since then scrounged a better one on Freegle, I'd just like to know what's going on. Thanks. I found an Acer LCD monitor lying on the sidewalk, in front of a grocery store actually, and all seemed fine, but if I left it running, it would reset, and display the Acer logo. I didnt' see any obviously bad capacitors, but I changed the electrolytic ones at the output of the power supply, and all was fine. The last monitor that went down was bad caps - it was a more serious fault and I was basically just having a look before binning it. When I saw how simple it was, I did the repair. There's one gathering dust in the corner, it has leakage on the front panel buttons - it develops a mind of its own in damp weather. Need to be a bit more desperate before I could be bothered doing anything about it. |
#5
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Dell monitor - invokes factory reset at boot.
Benderthe.evilrobot wrote:
There's one gathering dust in the corner, it has leakage on the front panel buttons - it develops a mind of its own in damp weather. Yup, I had one that got a bit of drink spilled on it, and it corroded the board with the button switches. Whenever a button starts acting up, I remove the capacitor that is across the switch contacts and replace with a 100 pF cap, and clean the board well while the cap is removed. That seems to have fixed it. The button switches themselves seem to be fine. Jon |
#6
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Dell monitor - invokes factory reset at boot.
"Jon Elson" wrote in message ... Benderthe.evilrobot wrote: There's one gathering dust in the corner, it has leakage on the front panel buttons - it develops a mind of its own in damp weather. Yup, I had one that got a bit of drink spilled on it, and it corroded the board with the button switches. Whenever a button starts acting up, I remove the capacitor that is across the switch contacts and replace with a 100 pF cap, and clean the board well while the cap is removed. That seems to have fixed it. The button switches themselves seem to be fine. Mine doesn't have any switch capacitors, the board isn't corroded. I cleaned it and re-tinned all the button pins hoping it would dry them out - that didn't work. Its a case of finding enough button switches to replace them all - and being bothered enough to do the job. |
#7
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Dell monitor - invokes factory reset at boot.
"mike" wrote in message news On 12/17/2016 1:52 PM, Benderthe.evilrobot wrote: In the past week, my Dell monitor has developed the habit of doing a factory reset when the PC is booting up. I wouldn't mind - but it gets it wrong and leaves the image shifted to the right. Doing the factory reset manually corrects it, but its a hassle. I'm wondering if I clicked something I shouldn't have, or the monitor is on its way out. Its no biggie - I found the monitor in the first place, and since then scrounged a better one on Freegle, I'd just like to know what's going on. Thanks. it's almost always bad caps. Quite possibly - I'd just about summoned the courage to tackle the clutter around the monitor so I could swap it out, I wanted something to eat so fired up the PC while I was sitting there - suddenly the monitor was behaving itself. Other symptoms were starting to emerge; some display aspects were starting to look washed out - the cursor would lose contrast while editing email replies. Today its suddenly working normally. |
#8
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Dell monitor - invokes factory reset at boot.
Benderthe.evilrobot wrote:
Quite possibly - I'd just about summoned the courage to tackle the clutter around the monitor so I could swap it out, I wanted something to eat so fired up the PC while I was sitting there - suddenly the monitor was behaving itself. Other symptoms were starting to emerge; some display aspects were starting to look washed out - the cursor would lose contrast while editing email replies. Today its suddenly working normally. I've found these microswitches leak some sort of oil, probably disintegration of some rubber part inside that turns conductive over time. This together with high impedance inputs causes false button presses. |
#9
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Dell monitor - invokes factory reset at boot.
"Jeroni Paul" wrote in message ... Benderthe.evilrobot wrote: Quite possibly - I'd just about summoned the courage to tackle the clutter around the monitor so I could swap it out, I wanted something to eat so fired up the PC while I was sitting there - suddenly the monitor was behaving itself. Other symptoms were starting to emerge; some display aspects were starting to look washed out - the cursor would lose contrast while editing email replies. Today its suddenly working normally. I've found these microswitches leak some sort of oil, probably disintegration of some rubber part inside that turns conductive over time. This together with high impedance inputs causes false button presses. That was a different monitor. |
#10
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Dell monitor - invokes factory reset at boot.
"Benderthe.evilrobot" wrote in message ... In the past week, my Dell monitor has developed the habit of doing a factory reset when the PC is booting up. I wouldn't mind - but it gets it wrong and leaves the image shifted to the right. Doing the factory reset manually corrects it, but its a hassle. I'm wondering if I clicked something I shouldn't have, or the monitor is on its way out. Its no biggie - I found the monitor in the first place, and since then scrounged a better one on Freegle, I'd just like to know what's going on. Thanks. That sounds like the Sony Blu Ray Player I smashed with a hammer a couple of days ago. |
#11
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Dell monitor - invokes factory reset at boot.
"mike" wrote in message news On 12/17/2016 1:52 PM, Benderthe.evilrobot wrote: In the past week, my Dell monitor has developed the habit of doing a factory reset when the PC is booting up. I wouldn't mind - but it gets it wrong and leaves the image shifted to the right. Doing the factory reset manually corrects it, but its a hassle. I'm wondering if I clicked something I shouldn't have, or the monitor is on its way out. Its no biggie - I found the monitor in the first place, and since then scrounged a better one on Freegle, I'd just like to know what's going on. Thanks. it's almost always bad caps. The 19" hanns-G had leaky front button switches - they were replaced and its fine. The Dell didn't have a DVI connector, so I just had a quick look - on not finding anything conspicuously obvious, I didn't bother putting it back together. If I didn't have another spare; I might've tried a bit harder. |
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