No power on, Gateway 700G monitor

If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed GATEWAY monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

Replacement board: http://www.lcdrepair.us

here is the List of compatible monitors with their brand names :

Sony
Sony MFM-HT205

Viewsonic
Viewsonic VP2330wb
Viewsonic VP231WB
Viewsonic N3250W

Dell
Dell 2007WFP
Dell 2407WFP
Dell 2707WFP
Dell 3007WFP
Dell E228WFP
Dell E207WFP

Acer
Acer Al2423W

Asus
Asus MW221U
Asus MW201U

Gateway
Gateway FPD1975W
Gateway FPD2185W
Gateway FPD2485W
Gateway FPD2275W

HP
HP LP3065
HP f2105

Samsung
Samsung 205BW
Samsung 214T
Samsung 215TW
Samsung Syncmaster 225BW
Samsung 242MP
Samsung 244T(US version)
Samsung SyncMaster 244T
Samsung 320P-Black
Samsung 930MP
Samsung 940MW
Samsung 940BW
Samsung Syncmaster 931BW
Samsung syncmaster 226BW

BenQ
BenQ FP241W
BenQ FP241WZ (Includes 1:1 pixel mapping)
BenQ FP241VW (Includes 1:1 pixel mapping)
BenQ FP222WH (Unconfirmed)
BenQ FP94VW (Unconfirmed)

LG
LG L245WP
LG L226WTX

NEC
NEC Multisync 20WMGX2

If you can tell your monitor manufacturers name and model no i can let you know about it. Anyhow the above information will help you.

bonannorl, Maybe it can be fixed. You did not give any history of unit. Only "now" stuff. Is unit covered by Gateway warranty? How old is unit? Date of manufacture? Did unit work fine connected to your pc and this black or black n blank screen thing suddenly happen? Is screen also BLANK? Have you swapped-in old monitor to prove PC is OK? Your CCFL back-lit lcd monitor no different than any other brand in it's basic design and operation. Get into my fixya profile and read some of my testimonials and solutions to black or black n blank screen problems to help in your decision to DIY fix or contract out needed repair work. Most likely 2485w has problem with it's internal "switch-mode-power-supply"/"ccfl inverter supply"!! Let me know more info about unit.
12fixlouie on fixya.

Hi there,
I had the same problem with the exact same model of Gateway 19" LCD. Likely this is the same issue you're experiencing, and I hope you're able enough with a multi-meter and soldering iron to fix this issue, or willing enough to tear this thing down to its components and at least try to fix it.... otherwise you have a fancy dead-weight object on your hands/desk.

In my case, the 5V power was fried so I actually inserted a 5V 2A power supply inside the monitor housing and soldered the +5V and GND leads to the marked connector pins that connect the power board(larger) to the vga signal board(much smaller). I stripped the guts from the 5V power supply so it would fit easier, and then stole power from the 120v monitor input and directly wired that to the wires that were hooked to the 120v power supply prongs(after removing those prongs as well). The monitor looks and functions as if it were brand new, there's nothing extra hanging out and no bulges anywhere. It works excellent.

Aside from my more-so hackful approach, here's some links and quotes, from other sites, from people who know what components to replace on the power board and still achieve a well-working end result.

From: http://www.topix.com/forum/tech/TNTK13PFRQURRRJJC/p4
Sure-power wrote:
I repair the Gateway FPD1960, FPD1975W and FPD2185W monitors. You can contact me at [email protected] if interested. If you can remove the power/inverter board it will save $$ on shipping costs. I have sucessfully repaired hundreds of these monitors. From: http://gatewaymonitors.blogspot.com/2007/09/gateway-monitor-recall.html
Russ said... Thank you Michael & Germel & everyone else for your help. I replaced the 5 470microfarad and 4 220microfarad caps on the FPD1960 and it works again. If your in the Metro Detroit area I can perform this repair for $60 onsite.

(insertabovename)@gmail.com
June 19, 2008 10:57 AM Russ said... russix

at

G Mail

Dot

Com

I may be able to fix it for you
I believe the problem is in the same board that causing the strobing screen problem.
Cost is 150 to repair the problem board if it isfixable. No charge if not fixable.
You will have to pay round trip shipping for the monitor and power supply to Pennsylvania.
Ebays bammbammfran

http://cgi.ebay.com/NEW-12V-2-5A-Adapter-Power-Supply-for-LCD-monitor-Cord_W0QQitemZ220405347970QQcmdZViewItemQQptZBI_Electrical_Equipment_Tools?hash=item33512eb682

Or you can just type in 12v 2.5A LCD Adapter in an Ebay search. You can usually find a bunch of buy now power supplies that come with cords for a decent price. I've been using one of these for a year or so on my monitor.

try ebay.

most likely is the power supply in the monitor.
gateway LCD has a building power supply in the monitor. it supplies 38W to the lamp.
since there is no display, it tells me that there is no power to the monitor.
if try another monitor and it works fine. then the problem is the monitor. (dispaly lamp is good for 17 Years- according to the tech spec.) but the power supply is pushing too much power.
other vendors max power is apporximately 30W.

make sure there is nothing behind the monitor and has good air flow. Since there is no fan in the unit. it need to vent the hot air natually.

I was in radio shack today... they don't sell them.

i dont think there is but there might be a switch inside the housing of the screen i would call gateway! it was sold with a 115v power cord so its proabaly factory set to use 115v you might however be able to change it? if you open the cover to the screen please make sure you know what you are doing TOUCHING THE WRONG THING CAN/WILL KILL YOU!!!!! please be careful :)