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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
I would change the caps first before investing anything in it... Those two small caps you said you didn't list, those are important to. I'm a little busy putting a BOM together for a bunch of stuff I have to fix, I'll try to help you after.
Who do you use, Digikey? (I don't know why Digikey is such a ripoff lately. Newark has WAY better prices lately, and they have lots of Nichicons at promotional prices now).Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Too late Mockingbird. lol
I tore down the monitor, and indeed CCFL#1 is blown out.
Pictures to follow.Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Wonder what caused CCFL blowout. I think I checked my LCD, it shows 5000 hours in the service menu... I wonder if this also counts time in standby... Di you use this heavily?Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Heres the Left and right side of the CCFL
Left side pic is a bit fuzzy, but from the right side pic, you get it.
Yes Its been heavily used for 3 years. Standby mode ftw! It _is_ Emachines, so I can see something failing.
An afternote: I have an old 17" Syncmaster from 2002 that is still running strong -- not even 1 dead pixel. /knocks on woodAttached FilesLast edited by Spz0; 01-25-2012, 06:27 PM.Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
So, my next logical question is: Where would you go for a replacement? Im reading that they can be sold pre-harnessed or bare. I dont mind a little soldering, but if its not too much more cash to get a pre harness one then I would go that route.
Insight?
Thanks again for all the input!!!Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
These guys have the best selection from what I have seen:
http://www.lcdparts.netComment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Great thanks!
Took a quick look at it, seems they dont have pre-harnessed CCFLs for 22" monitors, so I'll be soldering it myself.
With the bare CCFLs, the charge is for one single tube, not the 2 correct?Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Hehe, I have no idea... I encountered this website when I was looking for a bulb for a really old Panasonic 4:3 LCD. Never ended up ordering from them because I have to do what you did and make sure the problem is with the bulb in the first place... The TV had all Jap caps inside so I suspected the bulb, but you never know.Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
I ordered some ccfls from ccflwarehouse.com not too long ago. I actually ordered them through e-Bay (they sell under the name plazmo_industries). The bare ccfl is $8.00 with $4.99 shipping. I just measured the diameter and length and put that information in with the payment to them. The shipping cost is constant with 1 or more ccfls. The ccfls arrived in just a few days and worked great after I got them soldered in place.
http://www.ebay.com/itm/250474949765#ht_1047wt_1163Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Thanks for the links. Im gonna check them out today and get something on order.
Im wondering - since I now have it disassembled, if I should replace both top CCFLs, since they are on the same circuit, or just the one -- or all of them for that matter?
(*edit: I will be buying 2 now, as the dis-assembly process cracked the 2nd tube =\ )
Any suggestions?
afternote regarding CCFL tests:
When I tested #'s 2, 3 and 4 They all lit up individually and produced "2sec to black" conditions. and #1 was obviously blown out. When testing CCFLs, is it normal for the 2sec to black condition when testing individual CCFLs (monitor detects incomplete circuit and shuts off CFLs), or _should_ they stay permanently on when testing? (hope I explained myself correct). Im asking because I am trying to figure out if there is anything else going on that would cause the 2sec to black condition.
Thanks!!Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Your explanation was clear. You will get 'two seconds to black' if ANY ccfls are disconnected or or otherwise operating improperly.Thanks for the links. Im gonna check them out today and get something on order.
Im wondering - since I now have it disassembled, if I should replace both top CCFLs, since they are on the same circuit, or just the one -- or all of them for that matter?
(*edit: I will be buying 2 now, as the dis-assembly process cracked the 2nd tube =\ )
Any suggestions?
afternote regarding CCFL tests:
When I tested #'s 2, 3 and 4 They all lit up individually and produced "2sec to black" conditions. and #1 was obviously blown out. When testing CCFLs, is it normal for the 2sec to black condition when testing individual CCFLs (monitor detects incomplete circuit and shuts off CFLs), or _should_ they stay permanently on when testing? (hope I explained myself correct). Im asking because I am trying to figure out if there is anything else going on that would cause the 2sec to black condition.
Thanks!!
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Replacing 1, 2, 3, or 4 ccfl's is mostly a question of economics and preference. You're looking at about $40 to replace all of them, $15 to replace just one. If the other ones were showing signs of needing replacement, it would definately be worth while in replacing them.
Yes, turning the monitor on with just one ccfl plugged in will result in 2 seconds to black as this situation will trip the sensing circuit and shut down the monitor. The reason retiredcaps in post #21 asked about the ccfl's result in a different connector was to determine if something was wrong with the ccfl / wiring or with a particular connector.Comment
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Excellent -- I _thought_ there would be some type of sensor to detect faults in the CCFLs.
@Jayoung - I just purchased 2 of the 2.2mm 475mm Full Spectrum CCFL bulbs from the ebay store you listed. Thanks for that. $21 isnt a bad price at all!!
I'll let you all know when they come in.
Thanks again!! Everyone has been extremely knowledgeable and helpful in helping me diagnose my issue.
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
If you bought the "bare" lamps, there is a tutorial at
http://www.ccflwarehouse.com/lasotu.html
This is a very fragile procedure so proceed cautiously and slowly.
About 50% of the people who try break their replacement lamps because they are impatient and try to force things.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
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Re: Emachines L22YCET Bad Cap symptoms, but no sign of bulging caps.
Aye yes. I've read that page, thanks for the link.
Im a very patient person, so I will definitely be cautious.
I tore down the CCFLs wire harness the other day -- took me about an hour due to the heat shrinked rubber around the wires going into the end cap. Had to carefully slice it off so I could pull enough slack in the wires to free the assembly from the channel.Comment
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I have been using a Denon AVR-X2000 receiver in my living room for several years now, works perfectly, am very pleased with it. Recently I acquired another one, advertised as defective with flashing red led a few seconds after switching on. Picked it up to try repair and use in hobby room. After switching on, the on/off indicator led indeed initially flashes green for about 2 seconds, during which the display is visible, and then starts flashing red (at 2Hz) with a switched off display.
I'm afraid the service manual is too large to upload here (55Mb), it can be found at https:/... -
This specification for the ACER eMachines PT.NCAE2.071 can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the eMachines PT.NCAE2.071 boardview and eMachines PT.NCAE2.071 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet,...09-12-2024, 03:36 PM
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I have repaired a Sign WiFi Smart Plug with model number: SNSM-WASINGLE sold by Spares Nordic AB in Sweden.
The fault condition was that the device gave no signs of life: pressing the push button did not cycle the internal relay and the blue LED did not come on and it was not seen on the WiFi network.
The fault was very simple, capacitor C3 on the PCB with writing "KSJ" and "LOWESR" had literally blown its top off, after replacing it the device works fine again!
As I find linear high voltage regulator designs interesting I drew up the attached schematic... -
Hello,
First, I am a complete noob with high voltage stuff. I'm learning, but I need help by someone looking over my shoulder.
I recently came into posession of a Heathkit IO-4205 5MHz Dual Trace Oscilloscope. The documentation is copyright 1978. I'm told it works.
I opened it up to check the caps before I applied power, and found the following black caps and wanted to know what they were. They are on the power supply board. I was able to read the name and model and came up with, "Nytronics 162J-1, 0.1uF, 20% tolerance, 2000VDC."
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Hello!
I have two projects on my work bench. One is a friends dead JBL Xtreme speaker with a blown voltage regulator and corresponding bulged and shorted cap. That cap has clear markings so I know what replacement I need for it.
The other project however is a whole different deal. It's a Zoom 9000 guitar effect from the 90th that has developed a devil hound howl when there is no input from the guitar. I'm guessing caps problem. So, since I don't really use this effect anymore I thought it would be a perfect project to learn on.
I have studied the board and...
Comment