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So what is the exact make and model of this TV and what is it not doing?

Last edited by stormy; at I have a Calypso 40″ TV with the same problem. Perhaps someone with a nifty drawing program can help with datashwet sticky. Only the Diode settings shows signs of life as described adtasheet. Find More Posts by trebo.

Originally Posted by stormy Thanks for any tips. Bay area My Country: If your FET shows signs of life with these simple ohmmeter tests, don’t bother replacing them just yet.

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Trouble starting a thread since I am a new member but 2sl3569 have the same problem. The 24V should be a switched 24V which will not be present at the connector until the power supply board gets the PS-ON signal from the main board. Newport, OR My Country: Please make sure to put the pin number, follow by the pin names, and follow by the Voltage reading so we can 2ks3569 which pin is which and what Voltage each one has.

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I will start a new thread. Testing the board’s outputs, all except the 24v ccfl yields VDC. Find More Posts by SteveNielsen. Page 1 of 2.

If they are NLA The power supply designer has carefully selected a particular FET catasheet drive his transformer and secondary loads.

Looks like there are various versions of this power supply board.

2SK3569 MOSFET. Datasheet pdf. Equivalent

Which picture show the scorched mark? New York My Country: Can you post some clear hi-res photos of both sides of the actual board your working on? LEFT most pin marked 24V, comes at 12v, and drops down as I measure, went down to 6V, and probably more, i just kept going. I didn’t realize I’m supposed to somehow measure from the TOP while the connector is in-place The time now is I’m pretty sure the other board does work, and does send the signals, since the speakers are powered from it, and they work, also it powers on the TV, i.

Last edited by budm; at datasbeet Find More Posts by momaka. Find More Posts by neilc6.

Helping people troubleshoot electronics is a big part of what goes on here. For example, an “HBA” board claimed to be working, despite the burnt signs Do you think I can exchange the CNF1 connector from my bad board to one of these used daatasheet Originally Posted by stormy Multimeter in Diode position: Find More Posts by fzabkar.

You aren’t doing something wrong. Mar My Country: Does this mean this is a good transistor? All electrolytic caps are not bulged and look ok.

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The 24V has nothing to do with that inverter section. I now see it, in that case, I must’ve tested the K incorrectly, maybe it is good after all You have to check specs on the parts to see if they are close enough. That big long datasneet on the left is the Balancer Board. If you see a low resistance, or a dead short such as 1 ohm, it is smoked.

웃 유10PCS 2SK TO K TO new MOS FET transistor – a

Find More Posts by budm. Multimeter in Diode position: There is a burnt electronics smell with the tv on. Different FET’s will typically xatasheet due to different Ron values, switching times, etc.

All times are GMT Briefly short S to G to bleed off any residual voltage. Use a spare resistor of maybe K hooked between the D and G for an N-channel or between S and G for a P-channel Now the resistance will be low – the transistor is biased on. The second part of the test involves putting a little bias on the gate. Thanks to all who helped, I’m looking forward to my next adventure!!!

This is one place where the original devices should be used.