andyc
Member
Last Activity: 02-18-2025, 12:08 PM
Joined: 11-18-2010
Location: Bucharest
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rogfanther[USER="1694"]rogfanther[/USER] No, it was mounted upside down in one of those cases that pull air from the bottom of the PC and was sat on a very shaggy carpet. The rest of the PSU survived. -
Yes, it's supposed to have a nice copper color.
[USER="1694"]rogfanther[/USER]
Thanks! I didn't know that the core also sustains damage due to heat, I was planning on reusing it. Are these coils also dipped in laquer after winding? This one is pretty stiff but I am not sure if it's laquered or the melted enamel on the wires is keeping it together.rogfanther...Leave a comment:
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Intel S2600CP Dual LGA2011 server mainboard schematic wanted
Hello!
I found this board in a flea market and it has some torn off components on the back side (smd caps and resistors). Does anyone have a schematic for this beast? I only need the schematic since all the parts are labeled.
Many thanks! -
Corsair CV650 output coil
Hello!
Does anyone know where I could find this output coil for a Corsair CV650 PSU? I can't find a schematic and there is nothing written on it.
Thanks! -
Hello!
Does anyone know how to remove a password from this laptop? I bought it untested from the flea market and it has the power-on password enabled. It will not boot into Windows or USB flash drives so I cannot extract the BIOS image. I believe it's a CF19 mk3 according to the internet.
What can I do?
Thanks!Leave a comment:
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Re: Programming MEC1633L
Hello everyone! Any news on this subject?Leave a comment:
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Schematic for Gigabyte GA-Z77-DS3H
Hello! Does anyone have a schematic for a Gigabyte GA-Z77-DS3H or GA-H77-DS3H (they seem identical)?
Mine are Rev 1.1.
Thanks. -
Re: Hi Toshiba L55-b5294 bios dump needed DA0BLIMB6F0 REV:F
Working great on a L50-B-1T1 with the same DA0BLIMB6F0 rev F board. Thank you!Leave a comment:
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Re: LG 42PC1RV - Powers up, sound ok but no picture
Hello again!
I had some extra time over the weekend and i did some further research and tracing of the Y-SUS. Turns out the two daugtherboards are the power supplies in charge of generating -Vy and Vsc and they take power directly from the Vs line. The left one (blue transformer) is for Vsc (even though the resistor across which we measure -Vy is right below it) and the one with the yellow transformer is for -Vy. The yellow one was buzzing. So since they are powered by Vs and that voltage was nice and stable, i concluded...Leave a comment:
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Re: LG 42PC1RV - Powers up, sound ok but no picture
@dcapper I let it run for about ten minutes and both the YSUS and ZSUS IPM heatsinks become warm. I don't know how hot they should get during normal operation...
@charles frost I checked the buffers board (there is only one large board with 6 buffer ICs in this TV) and there are no shorts between the input and output pins and the inputs (two of them, one for 3 buffer chips) show up as diodes like i read on the forums that they should.
I also put a scope on the pin labeled "waveform" on the...Leave a comment:
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Re: LG 42PC1RV - Powers up, sound ok but no picture
Today i removed the flat cable that goes from the YSUS to the Control board and now i get proper -180V -Vy and the YSUS does not make the weird regular buzzing. Could this be a control board issue? Maybe it's not sending the right signals to start the YSUS?
The control board temperature LEDs do not light up with the flat cable removed so i'm assuming it's powered by 5V from the YSUS.
I recorded the sound it makes and the varying -Vy voltage measured accross R36:
[url]https://www.youtube.com/watch?v=oy7bYYbWvVM[/url]...Last edited by andyc; 03-26-2014, 02:59 AM.Leave a comment:
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LG 42PC1RV - Powers up, sound ok but no picture
Hello!
I have this LG 42PC1RV Plasma (display type 42V8) that went bad a few days ago. The TV turns on and the sound is working fine but there is no picture on the display. Checked the SCART out and the video signal output is there, channels change, volume control works etc so i'm guessing the main board is OK.
I took it apart and found that all the fuses for the Ysus and Zsus boards are ok and so are all the voltages from the power supply.
I checked Va, Vs, Vsc and Vzb and they are all fine, showing very close or exactly the same voltages as labeled on the panel. The only one... -
Re: A guide on how to troubleshoot 2 seconds to black
Thank you! Very useful thread.Leave a comment:
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