At first, the monitor did not come on at all so I Replaced 10 caps on the power supply board (all but 100mf 450v). Now the blue power light comes on but the LCD screen is all white. I read on some of the various badcap threads that this may be due to a blown fuse on the t-cont board. Where is this board located? The shielded metal box on the back of the LCD panel just has two boards - the power supply and a logic board that the vga cable from the PC plugs into. Do I have to take the back off of the LCD panel to get to the t-con board?
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Gateway FPD1760 LCD Monitor
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Re: Gateway FPD1760 LCD Monitor
It is the long board at the top of the lcd monitor. Follow the LVDS cable from the main board "north" and you will find it.--- begin sig file ---
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Re: Gateway FPD1760 LCD Monitor
Thanks for responding "retiredcaps." I found the long board and it looks like there are two possible fuses labeled F1 and F2. They are near one another and are both labeled with the number 110 with the letter P over each number. They both appear to be good (0 ohms) with my multimeter. I will try to get a picture tomorrow but I am not sure my camera batteries are charged or I can get the resolution you are asking for.
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Re: Gateway FPD1760 LCD Monitor
Originally posted by leaver View PostThanks for responding "retiredcaps." I found the long board and it looks like there are two possible fuses labeled F1 and F2. They are near one another and are both labeled with the number 110 with the letter P over each number. They both appear to be good (0 ohms) with my multimeter. I will try to get a picture tomorrow but I am not sure my camera batteries are charged or I can get the resolution you are asking for.
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Re: Gateway FPD1760 LCD Monitor
Measure the DC voltage right at the both ends of the fuses, black probe to chassis.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Gateway FPD1760 LCD Monitor
Originally posted by leaver View Postlexwalker: Do you know which pins on the T-con connector (at the LVDS connector) have the supply voltages?
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Re: Gateway FPD1760 LCD Monitor
I checked the voltage on both sides of F1 and F2 on the T-con board as follows:
1) When power was turned on, the blue light comes on.
2) After a 5 second delay, the voltage on both sides of F1 and F2 reads 4.98 volts.
3) The IC1 regulator next to F2 has 3.3 volts on center pin.
3) The LCD display is all white (fairly bright).
4) After about 5 seconds, the display turns off and the power light goes to amber.
5) Voltages at F1 and F2 go to zero.
The CRT on my 5o year Eico 460 O'scope is so dim that I don't think I will be able to measure the ripple on the supply voltages. I will have to borrow another scope from a friend to check if that is needed. Thanks for the help so far.....
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Re: Gateway FPD1760 LCD Monitor
Originally posted by leaver View PostI checked the voltage on both sides of F1 and F2 on the T-con board as follows:
1) When power was turned on, the blue light comes on.
2) After a 5 second delay, the voltage on both sides of F1 and F2 reads 4.98 volts.
3) The IC1 regulator next to F2 has 3.3 volts on center pin.
3) The LCD display is all white (fairly bright).
4) After about 5 seconds, the display turns off and the power light goes to amber.
5) Voltages at F1 and F2 go to zero.
The CRT on my 5o year Eico 460 O'scope is so dim that I don't think I will be able to measure the ripple on the supply voltages. I will have to borrow another scope from a friend to check if that is needed. Thanks for the help so far.....
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Re: Gateway FPD1760 LCD Monitor
5 volt for T-CON is correct. The T-CON I deal with uses 5V for panel less than 24inch, most big panel uses 12v. There should have other voltage regulators (1.8v, 3.3v , etc.)/switching power supply for the Gamma control, the controller of the processor, etc.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Gateway FPD1760 LCD Monitor
Originally posted by leaver View PostThe large sticker on the back of the LCD panel has the following on it:
BOEhydis and a number to the right which is HT17E13-100 and it says it is made in Korea.Attached FilesLast edited by lexwalker; 06-08-2013, 04:12 PM.
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Re: Gateway FPD1760 LCD Monitor
You can see the switching power supply done by the round black surface mounted inductor in pic #5 post 11. Can you see any test point pads with voltage labeling next to them?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Gateway FPD1760 LCD Monitor
I am including a better focused picture of the center section of my T-CON board so you can see the area around the surface mounted inductor you referred to. I don't see the test point pads with voltage labels but maybe you can since you know what to look for. Also, do you know if there are any service manuals available for this monitor on the Internet? Or, if it was made by Samsung for Gateway, is there an equivalent Samsung model that may have a schematic on the Internet? Thanks.
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Re: Gateway FPD1760 LCD Monitor
Originally posted by leaver View PostI am including a better focused picture of the center section of my T-CON board so you can see the area around the surface mounted inductor you referred to. I don't see the test point pads with voltage labels but maybe you can since you know what to look for. Also, do you know if there are any service manuals available for this monitor on the Internet? Or, if it was made by Samsung for Gateway, is there an equivalent Samsung model that may have a schematic on the Internet? Thanks.
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