Found stby chip blown out--Ic 903 i need part id generic# or svc manl, Appreciate help .
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Re: sharp lcd tv lc42sb45u dead set
Please do not open more than one thread for the same question leave this one until you need more help after id.
Members do not respond on this threadPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740
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plugged in after being off for quite some time. No OPC lights. Tried flashlight test for backlight check, nada.
Pulled the PS and checked all diodes including the 5w(?) D7908 that was the issue last time. All diodes check OK in circuit with DVM diode test.
No caps look unhappy. It is 17 years old. Was gonna fix and give to my brother.
But is there anything else to try or is it likely met its match.?... -
Hello and greetings from the United Kingdom, I'm looking for some help in repairing my grand daughters 'dead' Sharp LC-40FG2241KF smart tv. I have replaced the following damaged parts on the main PCB (TP.MS6486.PB711) :- fuse FB1, switch mode chip UB101, MOSFET QB101,capacitor CB116, resistor RB106, RB148 and a track from UB101 pin 6 to QB102.
Unfortunately resistors RB105 and RB108 are also open circuit and because of their size (0201) I don't know their value. Could some kind soul please tell me or point me toward a schematic with a parts list, a very big ask but for this I would... -
Hi all,
As the title suggests, how can I be sure that my EC chip is really dead?
I've recently gotten into this hobby of laptop repairs, and have successfully brought back to life a couple with some easy fixes, mostly shorted caps.
Now I'm working on HP Probook 455 G8, that had some "devil" run around on 3V line, burning a bunch of stuff. Luckily I have a dead 455G7 (for spare parts) so I managed to fix it (swapped burned parts) to a point that it will charge (both on barrel jack and usb-c), but it doesn't want to turn on. There is a 3V3 on a keyboard... -
A) TV initially dead
B) On a hunch of a locked up Google OS, plugged in a USB memory stick with latest FW and plugged it in. It booted into the update screen, completed the update and restarted to Home screen.
C) Was able to perform a Reset from Settings menu and completed out of box configuration.
D) Ran a 4K screen saver demo for about 6 hours, then turned it off for the day. Did not notice any stripes, dead zones or other artifacts in the image.
E) Powered back on and it now runs for a few minutes before relay clicks, screen goes blank, Main Board Red Digital Optical... -
Hello all, I'm Joekhoe, a newbie here
and ask your masters permissions and solutions for the problem i'm facing at the present.
I am in the middle of working on a SHARP Smart TV model LC-52LE835X from my customer, which totally dead and there's no output voltages at all at the output pins even though i have replace some of the components the output voltages remain the same with 0 volt.
The replacement as follows:
1. IC7905 : TNY264PN (first found exploded)
2. Q7915 : BT169D (exploded too)
3. IC7901 : 1608B (controller ic)
4. IC7601 :...
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