Re: Eliminating the inverter board
That sounds like a generic answer. :-)
BTW: Anyone have a good led supplier. I've shopped around but can't really find that "you can find any led here" type of place.
hansen01
New Member
Last Activity: 04-28-2012, 12:27 AM
Joined: 04-16-2012
Location: Hometown, OK
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Last edited by hansen01; 04-20-2012, 04:29 PM. -
Re: Eliminating the inverter board
Any consistent reason why these go bad.Leave a comment:
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Re: Eliminating the inverter board
Good news. The lcd and sound still run without the inverter. Makes sense. The only thing connecting the inverter to the main board are two connectors with a bunch of grounds, an on/off, and some other things (VIN, Vsel, VEPWM, VIPWM). No clue what those are. I suppose they are to control the light level.
As a side note I may have found the original problem. There is a tiny fuse or something that seems to be burned out on the main board. It bridges away from one of the connectors coming from the inverter. I noticed it looked a little...Leave a comment:
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Re: Eliminating the inverter board
Exactly. You can't edge light this model. I tore it down last night. The ccfls are about 2.5 cm apart and run the length (horizontally) of the screen. They set back about 1.5-2 cm from the diffusers. I figure as long as I keep the spacing of the leds to less than 2.5 cm the diffuser will sufficiently disperse the light and there will not be bright spots. I think it will take about 450 leds for this screen (about 30 x 60 cm). I suppose I could use strip leds and just glue down some rows but I would really like to find a 500 pc bag of smd leds so...Leave a comment:
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Re: Eliminating the inverter board
Good info.
@bigdozer: its a W32701 westinghouse
@budm: has sound and picture. no backlight however.
Will edge lighting be bright enough on a 27"? I was planning on soldering up a matrix for direct lighting. Really would like to find a schematic.Leave a comment:
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Re: Eliminating the inverter board
Is there a place to get the pcb diagram or schematic?
I have searched but the inverter board is so notoriously junky that all I can find is replacements for sale. Seems like at this point it would be more fun and worthwhile to wire up some leds in parallel (possibly cheaper as well).Leave a comment:
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Eliminating the inverter board
I want to build a direct lit led backlight matrix for a westing house lcd that the inverter board or lamps have gone out on. Is it possible to remove the inverter board or are there other functions of the inverter board that it will have to remain connected for? Also where can I draw from to power the leds without fitting another power supply into the tv case? Can I tap into the inverter board (if left in) or perhaps the power supply to the inverter board (if removed)?
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