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Search: Posts Made By: Rtech
Forum: Troubleshooting Computer Displays 02-17-2015, 02:35 AM
Replies: 24
Views: 2,294
Posted By Rtech
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.
Forum: Troubleshooting Computer Displays 02-02-2015, 02:33 AM
Replies: 6
Views: 1,643
Posted By Rtech
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...
Forum: Troubleshooting Computer Displays 01-29-2015, 02:56 AM
Replies: 80
Views: 12,237
Posted By Rtech
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%...
Forum: Troubleshooting Computer Displays 01-23-2015, 02:51 AM
Replies: 10
Views: 1,330
Posted By Rtech
Re: hanns g hh251 not recognizing input

Looks like you are getting somewhere now.BUDM has suggested some tests,lets see what happens ??
Forum: Troubleshooting Computer Displays 01-22-2015, 03:19 AM
Replies: 10
Views: 1,330
Posted By Rtech
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...
Forum: Troubleshooting Computer Displays 12-26-2014, 02:10 AM
Replies: 8
Views: 1,316
Posted By Rtech
Re: Dell LCD Monitors

I use that Kynar on all my re-wiring of lamps, and it has never failed so far.
Forum: Troubleshooting Computer Displays 12-24-2014, 12:47 PM
Replies: 8
Views: 1,316
Posted By Rtech
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.
Forum: Troubleshooting Computer Displays 12-24-2014, 03:14 AM
Replies: 8
Views: 1,316
Posted By Rtech
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.
Forum: Troubleshooting Computer Displays 12-15-2014, 02:43 AM
Replies: 18
Views: 3,474
Posted By Rtech
Re: 2 second to black - LG monitor FLATRON W1934s-BN

1.6 KΩ is far to high and is faulty.This is probably the one that got hot.You neeed two working transformers to drive all the lamps.
Forum: Troubleshooting Computer Displays 09-30-2014, 02:35 AM
Replies: 19
Views: 2,052
Posted By Rtech
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...
Forum: Troubleshooting Computer Displays 09-30-2014, 02:21 AM
Replies: 28
Views: 2,223
Posted By Rtech
Re: LCM-22w2...another story...

So now all you have to do is get some ??...and of course fit them,taking a lot of care as the break very easily.
Forum: Troubleshooting Computer Displays 09-28-2014, 04:00 AM
Replies: 3
Views: 1,162
Posted By Rtech
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...
Forum: Troubleshooting Computer Displays 09-26-2014, 01:21 AM
Replies: 28
Views: 2,223
Posted By Rtech
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...
Forum: Troubleshooting Computer Displays 09-25-2014, 04:16 AM
Replies: 28
Views: 2,223
Posted By Rtech
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.
Forum: Troubleshooting Computer Displays 09-14-2014, 05:00 AM
Replies: 2
Views: 1,069
Posted By Rtech
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...
Forum: Troubleshooting Computer Displays 08-23-2014, 12:47 AM
Replies: 45
Views: 10,686
Posted By Rtech
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.
Forum: Troubleshooting Computer Displays 08-13-2014, 02:50 AM
Replies: 21
Views: 7,824
Posted By Rtech
Re: Acer X223W -- "2 Seconds to Black"

Is ..jonobub likely to see your reply after 11 months is the question ??
Forum: Troubleshooting Computer Displays 08-09-2014, 01:58 AM
Replies: 5
Views: 1,345
Posted By Rtech
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...
Forum: Troubleshooting Computer Displays 08-01-2014, 01:18 AM
Replies: 34
Views: 3,713
Posted By Rtech
Re: hyundai no image

The flashlight 'test' does not work in every case.
Forum: Troubleshooting Computer Displays 08-01-2014, 01:17 AM
Replies: 5
Views: 1,345
Posted By Rtech
Re: Stored Dell 2007WFP, now has psu problem.

First requirement would be photos use Go Advanced and Manage attachments.The more the better, you can see the quality some posters provide.
Forum: Troubleshooting Computer Displays 07-17-2014, 01:57 AM
Replies: 122
Views: 13,440
Posted By Rtech
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,...
Forum: Troubleshooting Computer Displays 07-07-2014, 02:17 AM
Replies: 6
Views: 1,099
Posted By Rtech
Re: Replacement CCFL lamps

Try...http://www.iccfl.com/ I use them fpr CCFLs
Forum: Troubleshooting Computer Displays 06-04-2014, 03:58 AM
Replies: 6
Views: 996
Posted By Rtech
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.
Forum: Troubleshooting Computer Displays 06-04-2014, 03:52 AM
Replies: 62
Views: 5,110
Posted By Rtech
Re: Viewsonic VX2235WM........ 10 Seconds to black

AOP605 is the correct Part code, usually available on Ebay if necessary.A standard fault on these Boards
Forum: Troubleshooting Computer Displays 05-31-2014, 01:47 AM
Replies: 4
Views: 1,116
Posted By Rtech
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...
Showing results 1 to 25 of 500

 
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