I have a Fault on this TV, and have identified the problem to be a failed Inverter Transformer on the Board.The Transformer number is 2874012900,the Board is a DAC-24T051,the latter being old and looks like it has been superceded by VIT68001.95 Rev 01.The boards are also used I understand on the following,Goodmans LD3265D,ONN LE32LCD0802ID and Grundig GU32BLKS.Would appreciate any info ref obtaining the Transformer preferably, ot the Board if necessary.
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Re: Technika LCD32-207 Tfmr or Inverter Board wanted
What's the number on the trafo?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: Technika LCD32-207 Tfmr or Inverter Board wanted
No luck finding that - have a picture?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Technika LCD32-207 Tfmr or Inverter Board wanted
These possibly might be a fit? The first 4 numbers might be the only ones that matter? The rest might be a date or lot code?
http://www.lcdparts.net/TransformerD...ProductID=3359
http://www.lcdparts.net/TransformerD...ProductID=3360
http://www.ebay.com/itm/150844739598
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Re: Technika LCD32-207 Tfmr or Inverter Board wanted
I found this http://www.ohmsupplies.co.uk/INVERTE...MER-2974012900Last edited by R_J; 01-07-2014, 05:03 PM.Comment
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I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.
I don't know how exactly to test the inverter itself. Is it... -
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 ... -
I am currently on a troubleshoot of 46” Sony KDL-46BX450 tv. I came back from Washington to Texas on medical emergency and had to leave all my tools up there. All I have is a couple of screwdrivers and a dvm. I wish to ask the community a troubleshooting question. Please forgive stupid questions as meds I am taking produce brain fog.
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,...
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