Re: Laptop motherboards
[url]http://www.youtube.com/watch?v=stu58WAbA0Y&feature=relmfu[/url]Re: Laptop motherboards<br />
<br /...e=relmfu[/url]
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Re: Laptop motherboards
mybe this video gona help something: is only 3:42 [url]http://www.youtube.com/watch?v=stu58WAbA0Y&feature=relmfu[/url]Re: Laptop motherboards<br /> <br /...e=relmfu[/url]
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Re: hp 1940. injecting 12/5V from the pc psu.
if you change the Bridge Rectifier and the next 2 resistors in high voltage area, (in second picture) maybe u gona have fix the best idea, MAYBE never done that before, wish you luck.
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Re: Laptop motherboards
just like uranium says. remember: most of traffic accidents happens when the driver was drunk or he didn't know to drive.
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Re: Laptop motherboards
first look at this website: [url]http://www.ifitjams.com/lappower.htm[/url]
second watch this video: how to test a laptop AC adapter with multimeter:
[url]http://www.youtube.com/watch?v=LnTxs0o5CJA[/url]
i m pretty sure you can get more help in this forum,
never forget: that after every rain appears a rainbowRe: Laptop motherboards<br /> <br /...top AC adapter
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Re: resistor wattage help
You can use a wattmeter and measure the wattage as voltage and current is applied to the resistor at a given resistance.
resistors come in different wattage values( 1/8w, 1/4w, 1/2w, 1w etc) You should be able to find the schematic here:
[url]http://elektrotanya.com[/url]
write in your model number and it will allow you to downlload. select
--> (per service)Re: resistor wattage help<br /> <br...he resistor at
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Re: Nec Syncmaster LCD73v 2 second backlight
the best and easy is to replace like a pair ( 2 lamps one socket ) is a bit hard soldering them, look at my posts in this the same problem like yours with my HP-17 [url]https://www.badcaps.net/forum/showthread.php?t=5164&page=4[/url]
never forget that -After every rain appears a rainbow-Re: Nec Syncmaster LCD73v 2 second b...at my posts in
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Re: HP L1702 goes on and off
i changet the 2 of 4 ccfl,s and is working perfect now, in my monitor was only the 2 ccfl bad, thats all, it was a bit headaches during soldering them but finally got a fix. i had really really nice and clear suggestions from you guys, WHAT CAN I SAY only god bless you, thnx a lot,
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Re: HP L1702 goes on and off
thnx 4 induction: i will change them and post again,
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Re: HP L1702 goes on and off
advice from selldoor, i"ve test the inverter transformers t101 & t102 in 2kohm with multimeter and they are .460 ohm, resistance, i have some picture of them not so clear but i think u can see something, i testet the CCFLs outside of display they light for second and go off, soo they are two sokets with pair lamps, one of them is pink and the other is a litl dark they are not so lighty,, one in each is OK, do they need to be pair ok to stay on what is your advice goood people???...
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Re: HP L1702 goes on and off
i will try secondary windings of a transformer pin 7--10. like you say. 4, 5 min and i will post the results,
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Re: HP L1702 goes on and off
the ccfl bulbs look like this; is not any good quality picture, but i think they can show something.. so one of them is black in the end, is that mean a fault.. thnx...
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Re: HP L1702 goes on and off
amazinguk;232038]I have also the same problem with my HP 1702 monitor. the same bord shown in the MASIKs picture. i have testet fuses -f801 f802 f803- -resistors--transistors--mosfet,s- they all in good condition- only not test it electrolyt capacitors look fine an flat to me. next thing i m gona open and chek the CCFLs bulb, and i will post again
After every rain appears a RAINBOW
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Re: HP L1702 goes on and off
I have also the same problem with my HP 1702 monitor. the same bord shown in the MASIKs picture. i have testet fuses -f801 f802 f803- -resistors--transistors--mosfet,s- they all in good condition- only not test it electrolyt capacitors look fine an flat to me. next thing i m gona open and chek the CCFLs bulb, and i will post again,Last edited by amazinguk; 04-16-2012, 08:53 AM.
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