installed the original tcon board, and powered on the tv, and got no pic, n o audio, and the backlights went on and then off, no blown fuse. so, i inst alled the new tcon board recently purchased from ebay, and the fuse f701 bl ew. I should have removed the ribbon cables, I tested some caps on the orig inal and found that three metal cylindrical caps are shorted. I know it mak es no sense. but anyways, I returned the new board back to ebay, and am goi ng to purchase a new one. I want to make the tests you mentioned but am out of fuses, so how i can i find the ratings on them, it's a smd white fuse w ith a number 5 on it, any ideas..?
otes, that makes them 5A 32V.
the complete set of boards. Do not turn the TV on. Read the resistance o f the fuses on the main and FB416 near the LVDS connector on the main to gr ound.
se points. If you get a low reading, disconnect the TCON. If the short go es away, your TCON is shorted. Install you second TCON and read again. If the short reappears, your second TCON is shorted.
you'll blow fuses every time you plug it in.
e source they're on is feeding a shorted device. Those larger caps might a lso be bypassed by low value low ESR ceramic caps, any of which will presen t a short across any of the parts paralleled in the circuit.
board, a short on both sides, .6 ohms. removed the lvds cable from the Tc on board short went away. is there anyway to test the panel for a short.?
that would blow the TCON because of a shorted display is the Vizio E701i-A
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easure the resistances of the fuses and ferrite bead to ground with all the boards connected. If you pick up the short, you bought another bad TCON.
bbons disconnected from the display. If the back-lights stay on and the TV runs for 10 minutes or so, unplug the TV and reconnect the ribbons to the display and try again. If the TCON shorts with the ribbons reconnected, th en you have a bad display taking out the TCON. I would suspect Windex Syndr ome (cleaning solution sprayed on the screen in such a volume that it drips below the front mask and attacks the bonded address boards).
fuses. and there are no tcon boards available for this tv that i found.
ok measurements, no shorts. with the ribbons disconnected, I powered up the tv, back-lights stayed on a little longer, but went out... I took measurem ents again still no shorts..
TV is working, thanks again for all your help, i learned a lot.