Question about Delta Enterprise DE 995FC (White) 19 in.CRT Conventional Monitor

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DE-995 line problem

Hello. Can anyone tell me how does the line transformer connect to the HOT(BU2527)? I've got 80 volts on pins 1,2,3 of the LOPT , but nothing on the HOT. Thank you

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What is "flyback" in a tv monitor

A flyback transformer (FBT), also called a line output transformer (LOPT), is a special type of electrical transformer. It was initially designed to generate high voltage sawtooth signals at a relatively high frequency. In modern applications it is used extensively in switched-mode power supplies for both low (3V) and high voltage (over 10 kV) supplies.

this is use only on monitor the old one that used CRT TUBE.

Dec 01, 2013 | Samsung SyncMaster 793DF 17" CRT Monitor

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I need an internal pin out diagram for a 4 Pin connector to connect power supply to a hp pavillion f70 monitor. I do have a power supply with same specs but it has a normal plug with outer as +ve and Inner...

12 VDC , 4.16 A (4,16 A) Frequency: 50/60 Hz Power Consumption: less than 36 W in operating mode.
I think the other two pins are not used. It just requires the 12 Volts DC. +ve and -ve, positive and negative, respectively.

Feb 10, 2011 | HP Pavilion F70 17" Flat Panel LCD Monitor

1 Answer

I have a samsung monitor SyncMaster93DF it stopped completly with a little sound (tick tick ) i oppened it and found the hot transistor shorted (st2310) i replaced it with bu2527 because i couldnt find the...

try C5804 or J6812 instead of bu2527..replace IRF630 in 50 volt supply may b if problem after that then flyback transformer may b faulty. repalce it with same one.

Sep 05, 2010 | Samsung SyncMaster 793DF 17" CRT Monitor

3 Answers

My samsung syncmaster 2232bw wont turn on at all, and the pilot light(blue light surrounding power button) is flashing repeatedly at a fast pace, much much faster than the norm?????????

Solution for Samsung SyncMaster 2232BWplus:

The problem is bad capacitors: 5 pcs. 820microFarad – 25v and 1 pc. 330microFarad -25v. Replace these capacitors. Then re-solder the two transformers of inverter side. Also re-solder the power transformer and the inductor coil.
To open the casing:
At the bottom of the stand just twist the knob to unlock. Then, use a small flat screw driver beginning from the bottom (left or right) then using a hard credit card (or alike) then slide/glide it in between the cover plastics.
Triangle Tech Whiz

Dec 01, 2009 | Samsung SyncMaster 2233BW 22" LCD Monitor

2 Answers

Monitor LED blinking--no display--How to open the cabinet

check the vga cable if it is attached properly to your computer. Make sure that the VGA cable is connected to the Video Card that you are using.

check in the manual if you need to install the driver first.

also check if the monitor will work to another computer. If not, Then you can check the VGA Cable and replace a new one.

Hope this will help you out .. =)

Aug 24, 2009 | LG Studioworks 700S 17" CRT Monitor

2 Answers

Power problem????

Your Secondary Power supply Hot TRansistor is Faulty, Its situated next to the lopt TRansformer to a Heatsink

May 16, 2009 | NEC MultiSync LCD1770V - Flat panel...

1 Answer

ProView PL716s U101 roasted

I would change the caps anyway, they're cheap. The IC's may be running hot trying to make up for the bad caps.

Jan 28, 2009 | Proview Computer Monitors

1 Answer

Monitor is totally dead

Through my past experience I mwould remove the solder point at the input power B+ line to primary winding FBT. If the HOT has shorted there will be no power.Straight to the point if you know where the HOT is , you can desolder the middle pin or collector of the HOT transistor. If you desolder the pin which result the power led light turn up. That indicates either FBT or HOT has shorted

Apr 19, 2008 | LG Studioworks 45 14" CRT Monitor

1 Answer

Screen goes white

check the -ve ground voltage (we called it G1) on the card back side of CRT gun. the 1 or 2 no. pin. when u switch on it the voltage must be between 40 to 60 in negetive. if don't then follow the track and replace the controller transister. also the electolytic capacitor in that line....change the filter near EHT transformer. (that might be 10mfd/250 volts DC). used to filter that negitive supply.

if the monitor is compaq or samsung model then it is different.
for that u have to tell me then i will tell u....

Feb 08, 2008 | Gateway FPD2275W LCD Monitor

1 Answer

Retrace line on monitor

To prevent serious damage and extend the life of your monitor you need to adjust the main brigthness control of it. it is of the LOPT/Flyback transformer inside of your monitor!

check also for cold SOLDER joints on the main pcb and also on the crt neck Board.

Nov 16, 2007 | Sony STYLEPRO CPD-E540 (Gray) 21 in.CRT...

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