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Search: Posts Made By: ablacon64
Forum: Troubleshooting Laptops & Portable Devices 07-24-2013, 06:13 AM
Replies: 9
Views: 2,025
Posted By ablacon64
Re: Laptop schematics

Updated links:

DV6500:
http://www.4shared.com/office/4XHnLOKd/HP_COMPAQ_F700_-_QUANTA_AT1_ww.htm
Vostro 1400:
http://www.4shared.com/office/IYlbNTaI/Dell_Inspiron_1420.htm
Forum: Troubleshooting Laptops & Portable Devices 08-25-2012, 07:47 PM
Replies: 9
Views: 1,491
Posted By ablacon64
Re: HP DV6810us - no boot, no power, bad power mosfets?

Follow "5VPCU" and "3VPCU" in the schematics, look for a coil at which they are connected to, then look for the same serigraph on the board.
Forum: Troubleshooting Laptops & Portable Devices 11-26-2011, 02:05 PM
Replies: 2
Views: 990
Posted By ablacon64
Video training - Advanced SMD soldering techniques

1 hour and 17 minutes of good information. One of the best demonstrations I've seen on the web.

By author's choice, the video can not be incorporated, watch on youtube:
...
Forum: Troubleshooting Laptops & Portable Devices 11-14-2011, 06:22 AM
Replies: 6
Views: 1,713
Posted By ablacon64
Re: Acer Aspire 5920G Will Not Turn On

Check for the basic pwm 5 and 3 volts.
The schematics for that motherboard is here:
http://www.4shared.com/document/x1ZU_kyO/QUANTA_ZD1_-_REV_E.html
Forum: Troubleshooting Laptops & Portable Devices 11-13-2011, 09:43 AM
Replies: 13
Views: 2,701
Posted By ablacon64
Re: Acer Aspire 4520 Power Problem

This is normal, not a problem with the CPU. You should check the PWM first.
Forum: Troubleshooting Laptops & Portable Devices 10-26-2011, 08:16 AM
Replies: 4
Views: 1,298
Posted By ablacon64
Re: usb flash drive repair

Congrats! I've fixed some flash drive just by resoldering the 5v and ground solder joints. Users break it a lot! :)
Forum: Troubleshooting Laptops & Portable Devices 10-13-2011, 11:05 PM
Replies: 6
Views: 1,518
Posted By ablacon64
Re: Toshiba A100 - Ticking noise when plugged in

Looks like something is shorted. You should check transistors and diodes in that area.
Forum: Troubleshooting Laptops & Portable Devices 10-08-2011, 01:51 PM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

Most good fluxes are no clean. But you can clean with isopropyl alcohol. I use ethyl acetate (CH3COOCH2CH3). It's a very strong solvent and does not damage the board. It's more expensive than...
Forum: Troubleshooting Laptops & Portable Devices 10-07-2011, 09:18 AM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

b700029, he probably meant flux paste.

PVH, congrats, perfect job!
Forum: Troubleshooting Laptops & Portable Devices 10-06-2011, 09:15 PM
Replies: 758
Views: 216,824
Posted By ablacon64
Forum: Troubleshooting Laptops & Portable Devices 10-05-2011, 07:39 PM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

I don't see a problem but you can use only 3 of them if you want to.
Forum: Troubleshooting Laptops & Portable Devices 10-05-2011, 04:17 PM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

I don't know those e57 caps but normally "e" stands for 2.5 volts, so it will work (if "e" in this case is really 2.5v).
Forum: Troubleshooting Laptops & Portable Devices 10-05-2011, 02:03 PM
Replies: 758
Views: 216,824
Posted By ablacon64
Forum: Troubleshooting Laptops & Portable Devices 10-05-2011, 09:18 AM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

Cold solder may cause it to charge normally when not in use, and do not charge at all when up and running.
Please, notice that I've never had a case where a Toshiba would turn off because of this...
Forum: Troubleshooting Laptops & Portable Devices 10-04-2011, 10:15 PM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

abo0badr, you should check other things first. Your model has a very common issue with the DC jack. Check for cold solder joints.
Forum: Troubleshooting Laptops & Portable Devices 10-04-2011, 11:15 AM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

Too much higher value. I wouldn't do so.
Forum: Troubleshooting Laptops & Portable Devices 10-04-2011, 11:12 AM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

wmbuddhi, there was a 128 before. You don't need that much for a 907 but it'll also work.
Forum: Troubleshooting Laptops & Portable Devices 10-01-2011, 11:18 AM
Replies: 758
Views: 216,824
Posted By ablacon64
Re: Toshiba Satellite - Locks up when plugged in

Make it a little higher, never a little lower. ;)
Forum: Troubleshooting Laptops & Portable Devices 09-18-2011, 08:39 AM
Replies: 758
Views: 216,824
Posted By ablacon64
Forum: Troubleshooting Laptops & Portable Devices 09-05-2011, 08:29 PM
Replies: 6
Views: 2,660
Posted By ablacon64
Re: Acer Aspire 5520 dead

Not a problem if you know what you're doing and specially if you did not charge for the job. Anyway, most "reballers" started like that, you first reflow, then you get more courage and start to heat...
Forum: Troubleshooting Laptops & Portable Devices 09-04-2011, 05:30 PM
Replies: 6
Views: 2,660
Posted By ablacon64
Re: Acer Aspire 5520 dead

Unfortunately, it won't last. This is a common problem and if you want long term results you need to remove the chip and exchange the solder spheres.
Forum: Troubleshooting Laptops & Portable Devices 08-10-2011, 09:45 AM
Replies: 15
Views: 2,014
Posted By ablacon64
Re: How to fix ATI 9700 GPU

Yes, you can use it with a hot air station to remove the ATI chip.
Forum: Troubleshooting Laptops & Portable Devices 08-04-2011, 08:45 PM
Replies: 15
Views: 2,014
Posted By ablacon64
Re: How to fix ATI 9700 GPU

http://www.youtube.com/watch?v=97nxZwHG5bA
Forum: Troubleshooting Laptops & Portable Devices 07-30-2011, 12:48 PM
Replies: 10
Views: 2,348
Posted By ablacon64
Re: Compaq CQ60 Wont Charge( MultiMeter TEST)

It may be a lot of things. First you should check the voltages, 3v, 5v, power button voltage, etc.
You can start with the coils.
It's gonna be very difficult to help you without at least those...
Forum: Troubleshooting Laptops & Portable Devices 07-29-2011, 04:23 PM
Replies: 10
Views: 2,348
Posted By ablacon64
Re: Compaq CQ60 Wont Charge( MultiMeter TEST)

Does the notebook still works on battery?
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