Forum: Troubleshooting Computer Displays
02-17-2015, 02:35 AM
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Replies: 24
Views: 4,359
Re: Acer X233H LCD no power
Assuming you have checked fuses and they are OK, I would do a very quick test on D805 and D806, on the PSU board,and ensure neither are short cct.It may save you a lot of time.
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Forum: Troubleshooting Computer Displays
02-02-2015, 02:33 AM
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Replies: 6
Views: 3,224
Re: Dell 3007WFP and PA-4151-1-LF Help!!
Apart from Inverter transformers,any other ones in Monitors and Televisions(apart from LOPT's) very rarely fail,and a far as I can remember,I have never had to replace one.That I suspect is the...
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Forum: Troubleshooting Computer Displays
01-29-2015, 02:56 AM
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Replies: 80
Views: 16,719
Re: Samsung 2253bw black screen
My experience with Inverter transformers,is that the 3% supposed error limit is certainly not sacrsanct !! I have seen many with more than 5% which were not faulty,and others approaching the 10%...
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Forum: Troubleshooting Computer Displays
01-23-2015, 02:51 AM
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Replies: 10
Views: 2,634
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Forum: Troubleshooting Computer Displays
01-22-2015, 03:19 AM
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Replies: 10
Views: 2,634
Re: hanns g hh251 not recognizing input
At the moment, it is still not certain which PCB is faulty, it looks like either the Logic OR the Power Supply.I would determine that,by removing the logic board, plug the lamps into the PSU,fit a...
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Forum: Troubleshooting Computer Displays
12-26-2014, 02:10 AM
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Replies: 8
Views: 2,503
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Forum: Troubleshooting Computer Displays
12-24-2014, 12:47 PM
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Replies: 8
Views: 2,503
Re: Dell LCD Monitors
You need to upload photos of the 2009 Power Supply/Inverter Board,Top and Bottom,good focus.Use 'Go Advanced' below and 'Manage Attachments' to upload the photos.
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Forum: Troubleshooting Computer Displays
12-24-2014, 03:14 AM
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Replies: 8
Views: 2,503
Re: Dell LCD Monitors
CCFL.s a definite possibility,but could be the inverter part of the cct in the 2009,but red screen on the other normally is the lamps.
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Forum: Troubleshooting Computer Displays
12-15-2014, 02:43 AM
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Replies: 18
Views: 5,477
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Forum: Troubleshooting Computer Displays
09-30-2014, 01:35 AM
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Replies: 19
Views: 3,906
Re: BENQ2420 LCD turns off after 2 seconds
diif..Love to know where you got the CCFL's from ??.I am wiating for some from HK at the moment at $1.80 each,but add the Delivery costs and it certainly increases that.
FOR Catsunami, the...
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Forum: Troubleshooting Computer Displays
09-30-2014, 01:21 AM
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Replies: 28
Views: 4,565
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Forum: Troubleshooting Computer Displays
09-28-2014, 03:00 AM
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Replies: 3
Views: 2,110
Re: hp l1950 shuts off after 20 minutes
Please add Country,Mains voltage, and measurements taken on the Connector to the Logic board, while the the Monitor is working and when it goes off,particularly the pin which is marked on/off,or...
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Forum: Troubleshooting Computer Displays
09-26-2014, 12:21 AM
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Replies: 28
Views: 4,565
Re: LCM-22w2...another story...
One of the ways that you can measure length, is to measure the GLASS part ONLY and add 5MM to account for the sillicone ends.You then get the nearest to that,ENSURING that you err on the shorter...
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Forum: Troubleshooting Computer Displays
09-25-2014, 03:16 AM
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Replies: 28
Views: 4,565
Re: LCM-22w2...another story...
I have a list of backlight sizes, that I took off a supplier at one time, and for a 22" Widescreeen they show 480mm x 2.4mm..these will also fit 21.5" and 21.6" monitors.Hope that helps.
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Forum: Troubleshooting Computer Displays
09-14-2014, 04:00 AM
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Replies: 2
Views: 2,259
Re: Advice for installing aftermarket inverter...
There is a great possibility that the 'hissing; is caused by Backlight/Backlight wiring problems, and not necessarily the inverter.Provided you have the voltage from the main board ,and the Ground...
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Forum: Troubleshooting Computer Displays
08-22-2014, 11:47 PM
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Replies: 45
Views: 14,240
Re: Dell E196FPf
R856 is 15Ω R861 is 470Ω...cannot find the other resistor, check the number...also I am away on holiday today,so hopefully someone will help with other values if necessary.
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Forum: Troubleshooting Computer Displays
08-13-2014, 01:50 AM
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Replies: 21
Views: 12,217
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Forum: Troubleshooting Computer Displays
08-09-2014, 12:58 AM
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Replies: 5
Views: 2,557
Re: Stored Dell 2007WFP, now has psu problem.
Monitors which have the same Model number ,regularly have totally different internal Boards,no doubt due to the Manufacturer doing different production runs,and getting the cheapest internal parts...
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Forum: Troubleshooting Computer Displays
08-01-2014, 12:18 AM
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Replies: 34
Views: 5,682
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Forum: Troubleshooting Computer Displays
08-01-2014, 12:17 AM
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Replies: 5
Views: 2,557
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Forum: Troubleshooting Computer Displays
07-17-2014, 12:57 AM
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Replies: 122
Views: 19,988
Re: 2 dead monitors, blueh h94w and amw x1700ds
There is no mention of checking voltages to the inverter.I assume the 4A fuse has been checked,and the diodes D805-1,D805-2 and the 2 similar ones above them,do need testing.I find Diodes like this,...
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Forum: Troubleshooting Computer Displays
07-07-2014, 01:17 AM
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Replies: 6
Views: 2,272
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Forum: Troubleshooting Computer Displays
06-04-2014, 02:58 AM
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Replies: 6
Views: 2,147
Re: MAG 700P no power
*-You also have at least one faulty capacitor, the one on the end of the four in a row,cannot see the number.
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Forum: Troubleshooting Computer Displays
06-04-2014, 02:52 AM
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Replies: 62
Views: 8,551
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Forum: Troubleshooting Computer Displays
05-31-2014, 12:47 AM
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Replies: 4
Views: 1,959
Re: Belinea 101711 (111750) Maxdata
You need also to check the mosfet mounted on the heatsink Q801 according to your schematic.Hopefully that will be fine,but better to be certain, before applying power after replacing the failed parts...
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