Re: Samsung Syncmaster T240 Backlight/Inverter Failure
If the driver FET package is ok then the transformer should be all you need.
If the driver FET package is ok then the transformer should be all you need.
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Elements of the past and the future combining to make something not quite as good as either. -
Re: Samsung Syncmaster T240 Backlight/Inverter Failure
Although this thread is many years old. I just wanted to add a comment as it helped me track down and fix the problem with my T240 monitor. Therefore thanks to all.
In my case, the inverter was blown and I ordered a new one from China via aliexpress.com and it worked a treat.Comment
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Re: Samsung Syncmaster T240 Backlight/Inverter Failure
Hello, I know this thread is very old but I hope someone can help me with my problem.
I had a black screen, then I replaced the inverter. It was good for about 3 minutes then black screen again. Then I replaced the inverter again and again it worked for a few minutes then black screen again.
Can someone tell me what's the problem? I don't know why the inverter fails so fast.Comment
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Re: Samsung Syncmaster T240 Backlight/Inverter Failure
Is there really nobody who can help? I don't want to throw the monitor away...Comment
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Re: Samsung Syncmaster T240 Backlight/Inverter Failure
bumpComment
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This is my son’s cooler for his semi truck for his drinks the other day it started short cycling ( running for a second or two then shutting down ) and restarting four or five times then going into an error power cycle the controller then it would do the same thing again
Found a 47uf@63 volts double the ESR value of a new one
The 220uf@16 volts same as a new but 220uf@35 volt replacement capacitor
The main filtering capacitor was not replaced because I did not have that was not too tall
Where the 220uf capacitor is some type of switching power...08-30-2022, 05:28 PM -
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I have well maintained Sony KDL-46BX450. It went black one day. After turn-on, I get solid green light and Sony logo in screen center for about 1-2 seconds, then black. No blinking LEDs, no hissing. Flashlight test shows screen characters dimly viewable,... -
I have a tripp-lite aspint 3636vr inverter charger which blow some of mosfet transistors. I replaced them repaired also the driver circuit and tested but the mosfets burn again.
It work very well as inverter and also as charger if I let the rear switch in auto mode (inverter) and charger only(charging) but in auto when I connect the feed line 220V AC first time it pass ok to line and start charging the batteries but when I remove the feed line it pass to inverter mode and if I do it again the second time when passing from charging to inverter the Main transformer start making a...03-06-2023, 07:07 AM -
For some reason I'm just not going to let this 19" TV defeat me. I guess because I have a schematic to work from I feel like I'm oh so close.
History- while adding a turn-on circuit I let a small screw roll under the power board. Worked through all of that circuitry, probably replacing a MOSFET and PWM controller that were not bad but I was following the service manual. Finally figured out that the power supply is in working order when the inverter section (for the backlights) is disconnected. When the +12 supply to the inverter is disconnected the +12 and +5 will come up... -
If I had a solar fed grid tie inverter (GTI), a modified sine wave inverter, and a power outage occurred, what would happen if you disconnected mains, backfed the modified sinewave inverter (MSI) into house power, and hooked up the GTI to the output of the MSI, would it work?
Next thing is trying to charge the batteries using solar power, but that's another issue ...
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