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Dell Driver E172fpb
I changed the 5707's but the originals checked out ok and no change. You should now be able to pop out the circuit boards, be careful though, although the power baord would be quite amune to static, the processor board (with the dsp chip) I am viewing this on my newly fixed dual dell 17″ monitors!!! One other thing to note here is that I live in New Zealand, which in general is a bit colder then the rest of the world. navigate here
I found at least one example of this being done. Labor, well, what else are you going to do in the evening? Letting it cool between turn-ons lets you get back to a working stage. they sold me the wrong transistor, much to small.
Write to me in PM, we will talk. initially, i found an other page about this problem with the 5707, (read elswhere one could use a 5706), went to my local electronics store in stockholm, elfa…. None i have fixed have failed yet that i know of, if all bad joints a re soldered properly and transistors replaced and some times the fuse at location PF751, you
None seems to be overheating, nor is any single transformer warmer to touch than the others, from my earlier checking when the smoke first appeared, so I'm not convinced that I've Not sure what the voltage is supposed to be. They do seem on the expensive end considering the cost of new LCDs. They should start turning up along with the old CRTs in the discard piles put out for Council pickups.
Sorry getting side track… If you wanted to test if this is the fault (but with a small risk to the first monitor in the name of proof) you can swap Now this is my dilemma, do I select a NPN epitaxial si transistor, an N-Channel enhansed mode FET, power MOSFET or some other device? The way it should have been designed is that only one bias resistor should be there, so during startup the transistor that has the bias resistor will come on first and Replace R749 and R769 with 750 ohms.
I would think that even with a funny transformer, its still better then having a basic generic inverter (esp if it has no feedback / protection circuits in place). Now study the components in that area for obvious signs of heat damage. I'm glad to say that the 2 fixed LCD's I use still works so that in itself is good but in saying that, based on some of the comments, I dont Stripped screen down and removed backlights with plans to fit white led, apon removing lights and hanging them on a nail wall one fell down,found the white wire going along tubes
Even a compressed air can should work (using the canned air bottle upside-down ). The solution is a bit involved but should be a permanent fix. so i replaced them and everything was good for a few days but today I saw the power button was flashing so I read your site again and it seem that It works for 30 seconds first , then progressively the working time diminishes to 15, 5, 1 etc. - indicates that this is heat related.
DriverGuide Home Driver Updater Drivers By ManufacturerBy DeviceWindows 10 DriversWindows 8 DriversSearch WizardDownloads Forums Support OverviewWindows 10 DriversRequest DriverFCCID IdentifierGuides My DG Join Login DriverGuide Home Driver Updater Drivers Forums http://csshowdown.com/dell-driver/dell-driver-mce-wdm.html Look at that schematic and you will notice that each 2sc5707 has a 1k bias resistor. Was this review helpful to you?YesNoReport abuse4.0 out of 5 starsJust fineByFilletedon December 12, 2015Verified PurchasePerfectly alright. I just fixed my monitor by following your instructions.
for each),lcd repairs and bluestar are about same like 15 bucks so ill prob. Deals andShenanigans Zappos Shoes &Clothing Souq.com Shop Online inthe Middle East Subscribe with Amazon Discover & trysubscription services Conditions of Use Privacy Notice Interest-Based Ads © 1996-2017, Amazon.com, Inc. I turned it off and back on to find the 2 second display and black screen thereafter, back to the original symptom. his comment is here I can not find it so I will try to fit another one it comperable to the c5707.
Unscrew the four (4) screws that attach the base from the monitor and remove the base stand. 2. Something gets hot and that causes the problem. Check out: It should be possible to feed the LEDs from the monitor power supply itself.
unscrew the seven (6) screws from the circuit board and one (1) screw for the ground cable. 12.
Gareth Says: October 23, 2008 at 8:30 am | Reply Many thanks, I now have 2 working Dell monitors 🙂 jim Says: October 25, 2008 at 3:06 am | Reply Great If there is any more help available I can sure use it. David Says: November 17, 2008 at 10:14 am | Reply Picked up mine at the dump and got it working by cutting the diode and trace feeding the bad inverter. Sorry, there was a problem.
But in saying that, my lcd's been up for atleast 1 1/2 years (average use, not on 24/7) now with this fix so if it died tomorrow i wouldnt feel all Frightened Says: April 27, 2008 at 2:49 pm | Reply Okay, DO NOT USE the MJE3055 to repair this monitor. It is something to do with the controller. weblink So what is this protection circuit?
So, i took the transistors off and they were still good. It's a throw away monitor world! So I used the diode check on the meter, indeed found one that was farked. Was this review helpful to you?YesNoReport abuse5.0 out of 5 starsThis one is perfect and working greatByEdith J.
If you don`t do this, the transistors go defect again very soon matt Says: January 23, 2009 at 4:33 am | Reply I have also replaced all 4 of the 2SC5707's The monitor takes 20 to 30 min to turn on and now it wont. Their part number is 1554597, and they are £0.91 each. Peter mentions ZTX1051A which is a good find but personally I'm not spending any more time and money so mine is hitting the landfill.
I replaced all 4 with C5707 transistors. Scores of CRTs being discarded every time there is a Council collection, but this was the first LCD monitor I've passed, so chucked a u-turn and snagged it. Remove the plastic backing Remove the taped shield Disconnect and unhook the 2 ribbon cables which connect to the lcd pannel from the processor board. Pros: (10 characters minimum)Count: 0 of 1,000 characters 4.
Hoopzz Says: February 17, 2008 at 9:51 am | Reply Sounds like Kash's problem is the 3 amp fuse that looks like a power diode at location PF751 easy enough to Transformers themselfs might be hard to get hold of and to some degree, Its really hard to figure out if it is the enamel in the transformers which is melting and Anyway, Theres a few url's of places which sell inverters that claim to be for these. after two seconds will automatically tern offing monitor light ?????
but there were a long time after I retired. Reply Sarn 10.03.2017 at 21:43 I apologise, but, in my opinion, you commit an error. As you described, the real time and effort expended is actually in trying to fit the oversized new ones into a space not designed to accomodate them. When I saw the schematic, I noticed that there is a design problem on that lcd inverter circuits.
I also turned down the brightness all the way, but I'm no electrical engineer so I don't know if that will actually help any. (any input?) The new ones are bigger