Re: 820-00165 no power, 08-80ma, PM_SLP_S4_L is pulsing.
HI!
I also had many voltages pulsing, isolated many of them. It didn't have water problems.
After reading many posts in many forums, i also read about bad bios and the possible symptom that the voltage is pulsing every 2sec. when i'm going to check the bios IC to replace with another, i saw a very tiny IC (U6101) right before the Bios IC that had debris all around it like it has taken water spill only in its body. I had to remove it, clean the board and decontaminated the IC pins with flux. After resoldered the...
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Re: 2DIN Android Radio YD7388 amp short in one output
Yes i tested that caps in the inputs but none seems to be faulty but i also didnt tried to replace them. Because i cant expend more time on this one for now, i did a shunt between the rear input that has the same info for stereo output and pulled out the capacitor of the faulty input. Now the Front Left outputs the same as front right and i put the fader in the center. For the purpose this serves as solution.
Thanks for your help!
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Re: 2DIN Android Radio YD7388 amp short in one output
HI!
Thanks for your reply. i also tried a compatible TDA but that one didnt worked at all.
In this case i dont think the AMP IC is damaged, It looks that something before the AMP IC is giving the order to that DC voltage. It's because of that, i asked for IC(U7) ZL3560. Can it gives that simptom? Thanks!...
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2DIN Android Radio YD7388 amp short in one output
HI!
This 4 channel 2din radio has one of the outputs driving a cc voltage of 12v into the speaker coil burning it.
Replaced the Y7388 AMP IC and the same is happening.
I noted the 47k resistor when onboard has only 42k and a voltage appears higher than in the other channels.
My doubt is about the IC(U7) ZL3560 that looks it's driving the inputs of the amp, am i correct?
It's my first time with a problem like this and hope someone can give some help.
Regards...
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Re: Schematic for 6050A2488301-MB-A02 please
HI!
Here is the schematic. Hope it helps...
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Re: Laptop Samsung NP700 G7C, NO VIDEO. UMA to DIS possible?
HI again. No help until now. Someone have some knowledge about this? I just want to recover this laptop. someone knows another mxm graphics board that is compatible. I don't mean if it's worst from the original. Just want the laptop to work as a workstation.
THANKS!
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Laptop Samsung NP700 G7C, NO VIDEO. UMA to DIS possible?
HI!
I have a Samsung Laptop NP700 G7C, motherboard Athena-R rev1.0 BA92-10619, with bad GTX 675M MXM graphics card. Can i disable this graphics card by DIS to UMA
Specs are:
Graphics MXM (Athena_MXM_XT R1.0 BA41-02056A, BA92-09990A)
Motherboard: Athena-R rev1.0 BA92-10619
anyone can help? Regards
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Re: 42pj350 all voltages - no display
HI!
Just read many posts related to this TV and mine was like:
Sound and everything works but no image. Voltages on the panel are correct and 15V has 18V ok. Looking for the control board and the led don't light up, so with the set working, i tried to put some pressure in control board XD IC and suddenly the led on ctrl board started blinking and image appeared. I must assume this is a ctrl board with bad XD IC bga joints and it should be replaced.
This is only another testemonial to confirm that when you have all voltages...
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Re: 42pj350 no picture has sound.
HI!
Just read many posts related to this TV and mine was like:
Sound and everything works but no image. Voltages on the panel are correct and 15V has 18V ok. Looking for the control board and the led don't light up, so with the set working, i tried to put some pressure in control board XD IC and suddenly the led on ctrl board started blinking and image appeared. I must assume this is a ctrl board with bad XD IC bga joints and it should be replaced.
This is only another testemonial to confirm that when you have all voltages and...
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Re: Schematic for 6050A2488301-MB-A02 please
hi. try that link. it's still working ok. regards...
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Re: Backlight issue on LG 42LE5300-UC
HI!
I have same issue. But i've already switched 4 led strips and PSU. I just dont understand why this is happening after replace the main culprits. I'm wondering if anyone knows how to bypass this IC AS3693 led protection to continue working without turning off led strips. Thanks!!
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Re: Lg rz-32lz50 tv
hi. not tcon or panel issue. i've wrote that DVI is 100% working. The problem its in the decode section of the other inputs than DVI as you can see in block diagram. I will try first some solution for a similiar problem as you can see in the photos i will post and then tell you something. regards
...
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Re: Lg rz-32lz50 tv
Hi. I saw that this post is very old, but I have the same model TV and it has a problem like this but not so bad. You can see good image but with a little flicker around D all image. When I use DVI input the image is OK. Only other inputs have this problem.
Do you have any tips on solving this problem? Regards
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Re: LED driver board errors out on 42LE5300, back-lights for for few seconds only
Hi. I have the exact same problem in the same boards. I've replaced led driver board MOSFET and the bigger controller IC as3693. Psu Board connected without mainboard and exact the same problem. After 2 sec the backlight turns off and error pin have 3.3v.
Alastair E please tell me what I need to do to disable this led driver and use an alternative. Regards!...
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Re: Lg 42LE4500 losing backlights
HI.
I'm with same problem. the mosfets are so hot and i replaced them but the symptom is the same.
i've disassembled panel to see led strip and they look fine to me.
Have you replaced that IC AS3693B? The problem has been solved?
Regards!
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Re: HP 550 schematic
After some search to find the short circuit after removing that two IC, i still have short and the hot goes to graphics card NVIdEA GRrRRR.
If someone still have schematic, it can be usefull to solve other problems in this motherboard, If i still want to repair this one, i need to have the reference for that burned IC's.
Regards...
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Re: HP 550 schematic
Hi!
My problem is different but I'm Grabing this post because the motherboard I've trying to repair is exact the same you have. Please can someone tell me what is the reference of the IC U19 and Q628? They are burned as you can see in the photos I'm attaching with this.
If someone can help me I appreciate! Regards...
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Re: DAZR7BMB8E0 rev. E schematics needed
I've been searching for this schematic! Thanks!
Customer put 19v charger pin inside USB port. Let's see what it burned.
For now i have PU13 very very hot and the laptop led only light and shut down immediatelly
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