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Search: Posts Made By: Askic
Forum: General Electronics Technical Discussion 05-05-2022, 10:49 PM
Replies: 6
Views: 244
Posted By Askic
Re: Resistor value - color coding

Hello R_J

Thank you for the reply. Orange as first is the only way to have 3 in its value, when I look that way, Orange Black Gold Gold Black (3 0 N/A 0.1 250 ppm/K)

So, this seems as 3 ohm and...
Forum: General Electronics Technical Discussion 05-05-2022, 12:28 AM
Replies: 6
Views: 244
Posted By Askic
Re: Resistor value - color coding

Thank you for the reply, but how did you figure this out?

To me, according to the same table
First band is black = 0
Second is gold = N/A
Third is gold = N/A
Fourth is black, multiplier 1...
Forum: General Electronics Technical Discussion 04-29-2022, 06:17 AM
Replies: 6
Views: 244
Posted By Askic
Resistor value - color coding

Hello electronics expert,

can you please tell me what is supposed value of this resistor?

I'm really having a hard time figuring this out, because black lines on first place means 0 and gold...
Forum: General Electronics Technical Discussion 03-08-2022, 11:59 PM
Replies: 2
Views: 287
Posted By Askic
Re: Need help identifying a component

Thank you very much R_J.
Forum: General Electronics Technical Discussion 03-08-2022, 07:28 AM
Replies: 2
Views: 287
Posted By Askic
Need help identifying a component

Hello guys,

can you please help me to identify the components shown in the attached photo,
It is written the following:
B
R030
7286S

Is it possible that this component is 0.03 ohm resistor?
Forum: General Electronics Technical Discussion 02-10-2022, 12:26 AM
Replies: 7
Views: 775
Posted By Askic
Reading resistor value by color band

Hello,

attached is a picture with two resistors. I wonder what values are based on color of the band.
I have used this as a reference:
https://www.electronics-tutorials.ws/resistor/res_2.html...
Forum: Troubleshooting Computer Displays 01-19-2022, 12:35 AM
Replies: 0
Views: 263
Posted By Askic
Schematics for monitor Fujitsu-Siemens Scenicview P20-2

Hello,

does anybody have schematics or service manual for Fujitsu-Siemens Scenicview P20-2?

Thank you.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 01-18-2022, 06:41 AM
Replies: 4
Views: 293
Posted By Askic
Re: Macbook Pro 2012 15" possible short on 3v3_S0

Hello Piernov,

first of all, I don't have original 85 W charger for this laptop. I use PSU with Magsafe1 cable (L style connector). However, I also have a good working battery. I tested this with...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 01-18-2022, 02:42 AM
Replies: 4
Views: 293
Posted By Askic
Re: Macbook Pro 2012 15" possible short on 3v3_S0

Hello, just want to update and provide more information in order someone to be able to help or give some useful advice.

When injecting 3V into 3v3_S0 line, I noticed that U9220 (DP AUX, DDC, & HPD...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 01-17-2022, 07:58 AM
Replies: 4
Views: 293
Posted By Askic
Re: Macbook Pro 2012 15" possible short on 3v3_S0

I'd like to provide a bit more information.
All 5 big coils L(7510,7520,7530, 7550, 7560) have 1.3 ohm to ground or more precise 1 ohm to ground (resistance of multimeter leads is about 0.3 ohm).
...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 01-17-2022, 05:14 AM
Replies: 4
Views: 293
Posted By Askic
Macbook Pro 2012 15" possible short on 3v3_S0

Hello guys,

I have faulty 15" Macbook Pro 2012 with 820-3330-B motherboard with the following symptoms:
- when turned ON, there is a short increase in current to up to 0.8A (power supply unit...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 10-27-2021, 02:16 AM
Replies: 4
Views: 664
Posted By Askic
Re: Attempt to repair AMD FirePro

Hello guys and thank you for the replies. I feel I need to add more background information.
I have two DELL workstation that work as graphics servers with these type of cards. The PCs are about 10...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 10-12-2021, 02:17 PM
Replies: 4
Views: 664
Posted By Askic
Attempt to repair AMD FirePro

Hello guys,
inspired by this excellent tutorial made by dicky96 (this thread (https://www.badcaps.net/forum/showthread.php?t=99567)), I have decided to try to diagnose and repair faults AMD FirePro...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 10-12-2021, 06:54 AM
Replies: 11
Views: 1,847
Posted By Askic
Re: GPU Repair Guide - GPU Not Detected

So, YT channel "Learn Electronics Repair" is actually yours. It's a pure gold. Thank you for your time and effort.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-19-2021, 07:32 AM
Replies: 8
Views: 629
Posted By Askic
Re: 820-000165 SMC sensor issue throttling

I can confirm that this is not an issue. I've seen this on many A1466 MBAs and none of them had any issue because of that.

So, are you saying that after replacing C5125 capacitor, Memory Bank A1...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-19-2021, 03:44 AM
Replies: 0
Views: 239
Posted By Askic
Erratic touchpad behavior - ground issue

Hello guys,

I'm having almost exact same problem like described here....
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-17-2021, 05:18 AM
Replies: 9
Views: 625
Posted By Askic
Re: A1466 Missing Vcore

Hello mcplslg123,

please measure:
P3V3S0_EN and check whether you have 3v3_S0.
U8030 is a switch that transfer 3v3 _S5 to 3V3_S0.

When P3V3S0_EN is 3.3V, it will "move" 3V3_S5 to 3V3_S0
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 08-14-2021, 02:38 PM
Replies: 7
Views: 571
Posted By Askic
Re: MacBook Pro 15" Mid-2014 (DG) A-820-3787 fan FULL SPEED & ASD IHSC Sensor error?!

This is current sensing and not temperature sensing issue. You need to check the corresponding resistors and whether the output capacitor is short circuited. Please, closesly examine the area (you...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 07-22-2021, 07:34 AM
Replies: 8
Views: 1,883
Posted By Askic
Re: Locate BIOS chip on Fujitsu motherboard

Hello and thank you for the reply. Full motherboard name can be seen on pic 3. It is D2156-S21 GS3
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 07-22-2021, 12:43 AM
Replies: 8
Views: 1,883
Posted By Askic
Re: Locate BIOS chip on Fujitsu motherboard

Here are more detailed pictures.
The problem is that I cannot find a single, unique 8 legs chip on the board.
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 07-20-2021, 05:23 AM
Replies: 8
Views: 1,883
Posted By Askic
Re: Locate BIOS chip on Fujitsu motherboard

Thank you. I suspect this could be it. It is written on it ATMEL0729, 26F004, but there is also one more chip that has also ATMELxxx on it.
Is it possible it has two?
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 07-20-2021, 05:01 AM
Replies: 8
Views: 1,883
Posted By Askic
Locate BIOS chip on Fujitsu D2156-S21 GS3 motherboard

Hello,

I have a Fujitsu motherboard D2156 that cannot post. So I suspect that BIOS became corrupted. However, I'm not able to locate a chip on the motherboard that could be the BIOS. The pictures...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-17-2021, 02:43 AM
Replies: 10
Views: 3,874
Posted By Askic
Re: Lenovo T510 Fan error

Wait the sec. If you remove Q20 and short B and C, then, this part of t ecircuit will become a voltage divider. That means that FAN speed will become constant. There will be no way to control the...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 05-31-2021, 01:36 PM
Replies: 19
Views: 1,158
Posted By Askic
Re: MacBook Air 1466 820-3437-B Dead no fan spin

mferna, thank you for the feedback.
If I understood correctly, you used HP charger with 19 V output, and original charger is 14.65V? I know that Paul Daniels uses 18V for A1466 also, but I didn't...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 05-29-2021, 11:46 PM
Replies: 19
Views: 1,158
Posted By Askic
Re: MacBook Air 1466 820-3437-B Dead no fan spin

Hello mon2,

I don't claim I have made the same charger as original one. I also understand the difference. I'd like to know how this is unsafe, since it is connected to original PC laptop charger....
Showing results 1 to 25 of 152

 
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