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Search: Posts Made By: Johndill
Forum: Troubleshooting Power Supplies and Power Supply Design 05-11-2020, 02:49 AM
Replies: 4
Views: 238
Posted By Johndill
Re: APC UPS cap replacement

I've powered the board on without it and there is a bizzing from some where else on the board and still getting "DC Bus Over Volt".
Forum: Troubleshooting Power Supplies and Power Supply Design 05-11-2020, 02:00 AM
Replies: 4
Views: 238
Posted By Johndill
Re: APC UPS cap replacement

So it will run without it? :-)



Thanks for the uF and tolerence identification. :-)

I had a search but cannot find any of the same physical size so it may be proceeded by a smaller model...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-10-2020, 11:10 PM
Replies: 4
Views: 238
Posted By Johndill
APC UPS cap replacement

Hi, I have an APC SMX2200RMHV2U UPS and I'm looking for a replacement for this cap in the picture, it has melted I believe after a storm from what a friend said happened to it, it powers on and has...
Forum: Schematic Requests ONLY! 04-06-2020, 04:55 PM
Replies: 2
Views: 416
Posted By Johndill
Forum: Schematic Requests ONLY! 04-03-2020, 12:41 AM
Replies: 2
Views: 416
Posted By Johndill
Requesting Alienware 17 R3 schematic LA-C912P

Requesting Alienware 17 R3 schematic LA-C912P.
It is also the same as the 15 R2.
Bios chip does not seem to power on when power button is pressed, only get a solid red power button after about 20...
Forum: Troubleshooting Computer Displays 03-09-2020, 08:48 PM
Replies: 5
Views: 722
Posted By Johndill
Re: Laptop panel has green tint & purple lines.

Hi, thanks for your reply, as stated in the original post, "It has been tested on a known good system & found to be a fault with the panel & not the system or cable." :-) Could it be a cap on the...
Forum: Troubleshooting Computer Displays 03-09-2020, 01:19 AM
Replies: 5
Views: 722
Posted By Johndill
Forum: Troubleshooting Computer Displays 02-10-2020, 05:43 AM
Replies: 5
Views: 722
Posted By Johndill
Laptop panel has green tint & purple lines.

Hi, I have a laptop panel model LP173WF4 which has suddenly got a green/blue like tint and purple lines, You can see in the picture with MS Paint that it is not a white screen and you can compare to...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-12-2019, 06:36 AM
Replies: 7
Views: 308
Posted By Johndill
Re: Alienware 17 R1/Ranger la-9331p short

I'll have to put this board aside untill I get an opportunity to use a BGA rework machine. :-)
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-09-2019, 08:05 AM
Replies: 7
Views: 308
Posted By Johndill
Re: Alienware 17 R1/Ranger la-9331p short

I only have an SMD rework station, a BGA rework machine would be nice to have :-)

Is it achievable with an SMD rework station? It's a basic 858D from ebay that works well for SMD parts.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-09-2019, 05:38 AM
Replies: 7
Views: 308
Posted By Johndill
Re: Alienware 17 R1/Ranger la-9331p short

Yes, sorry, by "shorted" I mean "shorted to ground".

There are dark brown areas around the PCH die. Picture attached.

I injected 3.3V to the 3.3V PCH power rail and the PCH immediately heated...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-09-2019, 03:05 AM
Replies: 7
Views: 308
Posted By Johndill
Re: Alienware 17 R1/Ranger la-9331p short

UH8 is shorted on pins 1,4,5.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 10-09-2019, 03:03 AM
Replies: 7
Views: 308
Posted By Johndill
Alienware 17 R1/Ranger la-9331p short

Hi, I have an Alienware 17 R1, the customer shorted out a USB port shorting the board also.

PU100 gets hot when the AC adapter is connected.

QZ6 is shorted on pins 1,2,3, QZ3 pins 1,2,3 are...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-22-2019, 08:52 PM
Replies: 50
Views: 2,196
Posted By Johndill
Re: Clevo N150SD powers on for 10 secs

I put 3.3V to pin3 & 5 of U10 and the GPU started to warm up so I assume it was powered on but same issue happened.

I put some pressure down on the CPU and the CPU fan started working as it never...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-16-2019, 04:45 PM
Replies: 12
Views: 761
Posted By Johndill
Re: Alienware 18 LA-9332P 3V, 5V short

Yes, PU100 was removed in post#1, however the shorts remained.



I have been looking for a donor board for parts but from what both of you are saying, mine will be better off being the donor...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-16-2019, 08:26 AM
Replies: 50
Views: 2,196
Posted By Johndill
Re: Clevo N150SD powers on for 10 secs

I don't have ether, the post card sounds good, is there any particular post card I should get?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-15-2019, 09:53 PM
Replies: 12
Views: 761
Posted By Johndill
Re: Alienware 18 LA-9332P 3V, 5V short

Yes, short is under 2 ohms and continuity to ground.

That has been done in the previous posts but have still been unable to find the main short.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-14-2019, 05:49 PM
Replies: 50
Views: 2,196
Posted By Johndill
Re: Clevo N150SD powers on for 10 secs

Is this the end of the road? Anyone?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-14-2019, 05:48 PM
Replies: 12
Views: 761
Posted By Johndill
Re: Alienware 18 LA-9332P 3V, 5V short

Am I alone? It's so cold in here:crying:.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-09-2019, 01:54 AM
Replies: 12
Views: 761
Posted By Johndill
Re: Alienware 18 LA-9332P 3V, 5V short

I'm not sure what else to test from here, suggestions?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-08-2019, 07:38 AM
Replies: 50
Views: 2,196
Posted By Johndill
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-06-2019, 10:55 PM
Replies: 50
Views: 2,196
Posted By Johndill
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-06-2019, 09:51 PM
Replies: 12
Views: 761
Posted By Johndill
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-05-2019, 05:10 PM
Replies: 12
Views: 761
Posted By Johndill
Re: Alienware 18 LA-9332P 3V, 5V short

What should I try next?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 05-01-2019, 08:30 AM
Replies: 12
Views: 761
Posted By Johndill
Re: Alienware 18 LA-9332P 3V, 5V short

Please refresh as I have corrected some mistakes ^^^
Showing results 1 to 25 of 269

 
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