Hello. I want to try to repair some laptop chargers but it have silicon on board and smd components. So , how to easily remove this silicone?
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Re: How to easily remove silicon from board/components?
I peel it off, or use dull flat-blade tweezers to scrape and tear off pieces.
It's very difficult because hitting an SMT part and it gets broken.
It depends on how hard and how good the stuff is sticking to the PCB. -
Re: How to easily remove silicon from board/components?
small flat ended screwdriver works for me.Comment
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Re: How to easily remove silicon from board/components?
but i dont want to use scraping or tearing. i dont want to damage smd components. is there any other method?Comment
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Re: How to easily remove silicon from board/components?
acetone might help a little bit . or some gentle heat should soften it .Comment
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Re: How to easily remove silicon from board/components?
silicone rubber is resistant to just about anything - that;s why it's used for washers and o-rings.Comment
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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.... -
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
2017 iMac (Mid 2017) A1418
I'm not quite sure how this happened but a couple of components got ripped off the board when removing from the Logic Board from the iMac.
Can anyone help identify them?
I'll have to do the trace repair on the board before soldering on replacements but would prefer to order the components rather than get a whole scrap logic board off eBay.
Thank u
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I am new to hot air soldering. I need to remove one chip from the board. I have a hot air solder and I set the temperature to 350°C. I slowly started heating the chip, but the solder didn't melt. I heated it for about 5 minutes, but the solder still wouldn't melt. I increased the temperature to 450˚C and still nothing. After a while, the board started to change color, but the solder still didn't melt.
Fortunately, I'm testing it on old network switches to see how it works.
What am I doing wrong?
I've seen a lot of videos on youtube and everyone got the solder melted and the... -
Hy guys , i have a DVR board DS-80104 REV 2.2 that was powered wrong, i have some smds on the board that are blown and i can't identify them , maybe if someone has this board somehow and we can identify the smds', i have searched online and i can't find a schematic.
The smds are SOT-23-6 , one of them i think it has the marking ADJF since i found another one on the board with this marking , but the other one it seems that it starts with AG or it looks like. I would really apreciate if someone could help me identify those IC's .
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