I know that I am a newbie at repairing mother boards however I have been involved in electronics for most of my life. I have taught soldering schools and studied the same from different manufactures like kesler, and weller. I have tried three times to remove the capacitors from a motherboard without success. I have used solder wick, solder sucker and still seems that I am not doing a thing. I do not want to destroy the board while trying to fix it. The board is a KA3MVP. Purple in color. What say you guys and gals? The board has 6 caps bad that are visible. (bulged) and I would say more since that are the same mfg. I know that everyone wants help and give nothing in return but I honestly am trying to be a help when I can. Any comments would help.
-
-
Re: Ecs Problem
Yeah, I've run into that same problem. I don't know what they do differently from other manufacturers, but they're the only ones I really have trouble with. Even the older ECS boards are alright, but once they went to the newer RoHS solder they became nearly impossible to work with. I ultimately decided that it just isn't worth my time and effort to try to fix the damn things... if I find a bad one, it goes straight in the trash.
Maybe there's some trick I don't know about, but I've tried everything I can think of, and nothing seems to have much effect on 'em. -
Re: Ecs Problem
Gunswinger if I understand your problem you can't remove the caps.
You have to fuse some fresh solder on the pins and you have to heat them since the solder is fluid and than you can try so pull slowly the cap.
When you have removed it if the hole is not clean you can try with a steel needle: you can heat the hole on one side and push the needle in the opposite side of the hole. When the solder melt the needle pass trough it and since the steel doesn't solder you can extract it leaving the hole free.
Usually remains some solder in excess, you can cut it.
The ideal would be to use a desolder station but it is expensive.
When I recap MOBO very often I have to use the needle method.
Using the solder sucker (you must be careful) you have to heat up the hole on the side where there is the larger copper plane and suck the solder on the opposite hole side.
I hope this can help you, anyway I'm sure on the forum yo can find better explanation, my English is not good.
Ciao
Gianni"In the confrontation between the stream and the rock, the stream always wins...Not through strength, but through persistence."
H. J. BrownComment
-
Re: Ecs Problem
There are a lot of topics, posts here on the proper way to desolder caps from a motherboard. Most important is a good soldering iron, at least 40W if not more, and a chisel type tip.Comment
-
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
i have a problem with thinkpad X1 carbon gen 2 "LMQ-1MB 12298-2 48.4LY26.021"
The laptop was turned off because the MOSFET was not transmitting voltage. After checking it turned out that the gate pin on the MOSFET was the problem, because it was producing an inappropriate voltage. and it was discovered that the problem was with the Think engine, so I decided to reprint each pin, and finally the mosfet could work properly. However, there is another problem, even though the voltage has been supplied to the laptop, it still won't turn on, there isn't even an LED indicator. After double... -
This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.
There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as... -
I am at my wits end trying to get these 2 hole clear. The other 2 holes no problem. I tried low melt, hot air, wick and my solder sucker gun. One hole still has the pin in it. I have my iron up to 450 with a big tip, hot air turned up to 500. Any suggestion? Thanks Michael
And by the way it took me 10 minutes to find the login button, it sure needs to be a brighter color or something. -
PC Specs:- CPU: Ryzen 5 1600
- GPU: GTX 1080 Palit JetStream
- MOBO: ASRock ab350 PRO4
- RAM: Crucial Ballistix Sport 2x8GB 3000MHz (XMP 2.0)
- PSU: XFX 650W (don't remember what model)
- OS SSD: ADATA SP920
- OS: Windows 10 21H2
Problem description:
Hi. I have a problem that has been going on for some time (2-3 years). It's hard to explain what it really is. Sometimes, my computer stops playing music, stops videos (starts buffering on youtube), there is no sound in games and when I minimize the game window and return to the game there is a black screen with window borders...
Comment