The clear coating is called a conformal coating it is used to protect PCB’s and components from moisture/liquid damage. There are chemical conformal coating removers widely available on the market. This stuff was the the bain of my life when I worked repairing aircraft avionics modules.
I had also suffer from this but I had cleaned with petrol those coat were remove easily but I can't understand what type of coat was done by company 🤔🤔🤔
conformal coating can be removed with IPA sometimes, depends though as there are different types. The one we used would come off with IPA no problems, or Microcare heavy duty Flux Remover
Lemon Juice and (store/shelf/.3%) Hydrogen peroxide or fingernail polish can be used if you don't have Acetone or remover, or if it's late and stores are closed. Still needs a bit of heat to activate though... Or if you live in Alaska and don't have reliable access to places like Amazon or other online stores. The lemon juice and h2o2 mix has to be thoroughly cleaned up though because it will cause corrosion and will short the board. So clean with soapy water and a soft tooth brush, then rinse thoroughly, then rinse thoroughly with IPA.
I have a story about one of these. I am also an automotive locksmith. We run a lot of calls. This vehicle requires a lot of work to make the key. If we have to take things apart, remove panels, instrument clusters, open modules we send them down the road. Range Rover is one of these. We had a customer call just for a lockout. We opened it up and her keys weren't inside so she towed it to the dealer. They told her we ruined her KVM by unlocking the car without a key. They wanted $2500 for a KVM and close to $1000 for the key. The lady called me not blaming my company but she didn't know what to do. I told her they were full of BS. I had the car towed out and another locksmith who does all the high end stuff programmed a new fob for $650. This lady was so thankful for me helping her out. I hate these dealers. Always telling customers false information.
Those main dealers love to rip the arse out of anyone. I had a customer that had a totaly flat battery, and the mechanical door lock never worked anyway, so he only used the electronic key fob, the call out service jacked his range rover up & temporarily put a power pack on the starter motor/ solenoid which gave him enough power to quickly undo the door.
Electronic boards are coated to prevent corrosion. Three types of coatings are; Acrylic resin Silicone resin Urethane resin (Polyurethane) To dissolve these resins there are solvents to do this with BUT you have to be careful not to also dissolve the PCB board as well. Acrylic resin can be dissolved with Acetone (very strong) and Xylene Use a Q-tip with sparing amount of solvent on it and mask area around the electronic component with painter's masking tape. Silicone resin use Dicone NC-9 on Q-tip using same method. Urethane resin use Isopropyl 99% Since there is no way to know which resin was used, start with the Isopropyl to see if that works. If not then knowing that Acrylic would be the most obvious choice as a coating, I'd then use Xylene. But make sure you mask off the area. If no effect then use the Dicone. It is safe on PCB's
The most importand question about it is not how to remove it or "he does not like it". The question is why it is not put back on. it can be just a coat of clearcoat. Car needs this for moisture and humidity changes. I understand the hate , but it it there for a reaseon and decent repair would end with that coat or similar back on there. Also thanks for good explanation.
MG Chemicals 8310A - Conformal coating stripper - Gel. Try that stuff out Alex! All the info ive learned from you im excited to pass 1% knowledge to you 💙
It is always a pleasure to work with customers who understand and appreciate the efforts you are putting in order to make the job done. Another amazing video💪
I work for an engineering company that designs and manufactures custom electronics. A lot of our boards receive this conformal coating. Anytime a board needs to be reworked then acetone is used to strip the coating before soldering.
I have a few lads that comes in all the time for small auto electronic repair and they're the customers I really like , they never ask for it to be done asap as mostly the part is either stupidly expensive or has a lead time of a few weeks to get a new one. They never complain about the prices and I'm very reasonable because It's little jobs like this is what I love , they hand you the board or part ready to go or I tell them look take it to bits and just give me the board or what needs to be done and I'll do it while you wait. I tried to charge a guy 10 euro once for soldering a new smd led onto a dashboard as he had it ready and 10 leds on a strip, he threw a fifty at me and left me with rest of the leds for next time.
Good job with the conformal removal. A few TH-cam channels have various methods of conformal rework, one in particular is "Rework and Repair 'Conformal Coating Removal' " on the Paceworldwide channel. If solvents are suggested, it may be difficult to source if someone is currently in California. There's also a section in the IPC 7711/7721 titled "Coating Removal, Identification of Conformal Coating" which has suggested methods as well. Just my 2 cents.
I deal with this conformal coating daily- Use various products to remove it. I liked the BGA Blade idea you used under the chip but did have me nervous about a pads coming off. Obviously experience plays a part to not damage anything. The blade scraped the coating nicely as well without damaging anything. Definitely an "over come and adapt" situation. Nice
True. Conformal coating is a nightmare to all repair shops. There's actually a solvent that can remove conformal coating, but I forgot what. It's not even commonly used in the industry where they use conformal coating treatment for their customers. The purpose is not only to protect the board from moisture/liquid attack, but also most likely encouraged that the board is non-repairable.
The conformal coating has a number of advantages including protection from humidity, debris, and oil. Perhaps it might be useful to be able to remove and then replace the conformal coating. There are pen-like solvent applicators that allow spot removal of the coating.
@@RocksmithLocksmith Not sure I'd want to try the razor blade on some type of polymer coating on a fine-pitched microcontroller IC. But not surprised that it worked for you.
For repair work these conformal coatings are a real pain. I understand why they are used, but the silicone type is the easiest to work with. You very rarely even see the softer silicone type used these days. The worst for me is the full epoxy resin type potting. It's not even worth trying usually. You did an excellent job Alex without using a removal aid (chemical removal) it is very difficult to work with for sure.
We had that conformal coating on every thing we worked on in the Military way back in the 60s. Had none of the fancy tools and even soldered in electron tubes . The once you dig thru the coatings the traces would come off the PC board if you just looked at it. Different but still very difficult. Love your techniques.
Bro very very nice effort I like it Only one thing I want to add if you donot mind that There are stuff available called conformal coating & conformal coating removal also. I am using those. One more thing I want to add that because it is used in a car in which many things can happen like rain ,vibration etc. so before handing over to the customer please do the coating overnight and then handover to him, Thanks
i work manufacturing electronic boards for 15 years, with our coat we use nitro anti-fog thinner or DOLPH’S T-200 to remove the coat. I don't know if is the same coat but workfor us, you have to put the product on board and let it there for 10-15 mins .
You should try using the grinding pen first to clean the crap of the pins, then use a low melt solder. That's the only way I found around it. Great video as always brother
Great work! Chemicals aside, what about using a square window aluminum layer to isolate all the components from the chip area. That could prevent 'browning' the chip surroundings...
Alex, have you tried any of the proprietary conformal coating removers like 8309? I think they need to be used outdoors so may not be practical for your area. Keep up the great videos and well done with this one. 😀👍 ... and if I’d realised the chip was the wrong way up I’d probably find something to stub my toe on before repeating the job.
Looks like a SPC560B60L3 chip. Made by STMicroelectronics. It is a 32-bit Power Architecture MCU for Automotive Body and Gateway Applications. Less than $11.56 for small quataties.
The Land Rovers are designed to go in 1m of water, it is normal that the card is a varnish of tropicalization. Thank you for your patience and your videos.
When keeping the old component is not the issue, just cut the MCU pins with a fine and sharp tool to not to damage the pads, then remove the pins leftovers with solder and wick.
I hate conformal coating too! I had to re-spray it on the PC board after repairing it. I would use Acetone to clean the brown burnt conformal coating and re-spray the conformal coating.
One of the tasks at my first job was applying a conformal coat to circuit boards. We went through so many rattle cans of Krylon! Nasty stuff. Breathing protection is essential.
I used to do that with a normal hakko soldering iron. As you said, flux makes it possible. In a pinch, I have removed old chips with knife and replaced with a weller gas iron.
Wow, I've never seen that move before, where you dragged the solder over the top of the chip. You should name that technique, something like "Alex's Solder Shuffle", great stuff!
There are Resin, polymer desolvers and solvents for this but you have to know what type of resin they are using and car manufacturers use several different kinds. But I would say you would find them on the internet. You might have to try different types to see which ones work and which ones don't.
I use a small amount of paint stripper apply with a small brush leave until it starts peeling then remove works a treat everytime , just make sure you remove all the stripper 👍
Techspray 2510. 2510-P pint can 2510-N Pen about the size of a paint marker. Might be difficult in Cali! Pens can be ordered, but the pint cannot be shipped to a home address anywhere in the U.S. They also have replacement coating to replace it after you get done to end the job up... "Better than Factory" !
Your pin1 corner had the extra large feedthrough at it when you first marked it. Later it looks like you used a different corner as pin 1 when you soldered the new chip in.
Use Wurth engine seal remover - works 100% for coat. It is safe to use if do not let it on aPCB too long. I use it in my job almost every week . I work on vehicle electronic DV.
That conformal coating is really hard to get off even with the chemicals to do it. I've done it and sometimes it takes days of soaking to get it soft enough to try and remove it.
I use MG Chemicals 422C silicone conformal coating on PCBs in marine grade beacon strobes. It protects the strobe beacon PCBs installed on oil rigs in the Gulf of Mexico from water ingress and condensation. Luckily the boards are available and under $300 and just get replaced when faulty. But MG Chemicals does make a silicone conformal coating remover "8309" if necessary.
Many people are saying acetone and it is possible that could work, I don’t know what that stuff is. Jo was thinking to clean the area with MEK, then you can clean with alcohol before heating it up.
It's a moisture sealant that is applied to all electronics exposed to the outdoors / elements. Cars, Aircraft, Boats, Trains, Subs, objects in space, etc. Even remote control cars and planes, boats, etc. There is a chemical neutralizer and a replacement spray.
The Trick i've used on thease in the past is to run a scalpel blade along the legs and just shear them off the IC' then low-melt the pins from behind also sometimes Acetone will soften the Conformal coating making it possible to peel chunks like a sunburn..
This coating does 2 things: 1) prevents moisture 2) shows where heat comes. There is cleaning liquid like acetone, these coverings are variable. Sometimes ECU s are first filled with glass pieces and then filled all with jelly to cover it all.
I believe acetone will take off the conformal coating (edit: acetone may damage the board). I would apply new conformal coating as this is done to make the board water resistant. Without it corrosion can build up.
These chips can be unlocked if I’m not mistaken. I use the keytool plus and although they are one time program they can be Virginized. I have not done it personally on a kvm newer then 2018 but I have seen it done on the video that I watched before this one.
There are many ways to remove the coating. What I like to do is spray some brake clean around the IC let it soak for a minute. It will all corode and turn white(might damage ICs around be careful cause it eats through plastic) and then i spray original WD-40 on it and clean it with esd brush. Does the job everytime. There are removers of it as well and they are widely available, but I never had problems with brake cleaner and wd40.
When you are using low melt solder, do you change the temperature of your soldering iron or does it just stay balled like that regardless of the iron temp?
I attempted my fist micro usb replacement today with only a soldering Iron I removed the one from the donor board just fine .Then lifted a pad on the board I wanted to use !!! If only I had good flux …
$4k, sounds about right. Toyota dealership near me quoted $240 for key fob programming alone- that's without the replacement fob. Simple 5 minute reflash procedure, nothing more, for $240. Got an OBD2 cable and a cracked version of Techstream for $30, problem solved. Infinite reprograms babyyy. Sure beats having to replace an MCU though... wtf is Land Rover thinking? Oh and an additional benefit of the DIY Techstream setup- ECU updates are free too. Toyota dealerships have charged upwards of $150 to get those done. Sleazy business!
The clear coating is called a conformal coating it is used to protect PCB’s and components from moisture/liquid damage. There are chemical conformal coating removers widely available on the market. This stuff was the the bain of my life when I worked repairing aircraft avionics modules.
Acetone to CHCL3 will probably do the work, anyway anything under the chip cannot be removed by a solvent
I had also suffer from this but I had cleaned with petrol those coat were remove easily but I can't understand what type of coat was done by company 🤔🤔🤔
conformal coating can be removed with IPA sometimes, depends though as there are different types. The one we used would come off with IPA no problems, or Microcare heavy duty Flux Remover
You can use toulene or epoxy dulient it will melt the resin off 100% guarantee...
Lemon Juice and (store/shelf/.3%) Hydrogen peroxide or fingernail polish can be used if you don't have Acetone or remover, or if it's late and stores are closed. Still needs a bit of heat to activate though...
Or if you live in Alaska and don't have reliable access to places like Amazon or other online stores.
The lemon juice and h2o2 mix has to be thoroughly cleaned up though because it will cause corrosion and will short the board. So clean with soapy water and a soft tooth brush, then rinse thoroughly, then rinse thoroughly with IPA.
I have a story about one of these. I am also an automotive locksmith. We run a lot of calls. This vehicle requires a lot of work to make the key. If we have to take things apart, remove panels, instrument clusters, open modules we send them down the road. Range Rover is one of these. We had a customer call just for a lockout. We opened it up and her keys weren't inside so she towed it to the dealer. They told her we ruined her KVM by unlocking the car without a key. They wanted $2500 for a KVM and close to $1000 for the key. The lady called me not blaming my company but she didn't know what to do. I told her they were full of BS. I had the car towed out and another locksmith who does all the high end stuff programmed a new fob for $650. This lady was so thankful for me helping her out. I hate these dealers. Always telling customers false information.
Those main dealers love to rip the arse out of anyone. I had a customer that had a totaly flat battery, and the mechanical door lock never worked anyway, so he only used the electronic key fob, the call out service jacked his range rover up & temporarily put a power pack on the starter motor/ solenoid which gave him enough power to quickly undo the door.
wow @@merlin5476
Is it true that unlocking the car can lock the KVM
@@binadams388 The new fob programmed without issue so I am going with dealer BS.
Electronic boards are coated to prevent corrosion.
Three types of coatings are;
Acrylic resin
Silicone resin
Urethane resin (Polyurethane)
To dissolve these resins there are solvents to do this with BUT you have to be careful not to also dissolve the PCB board as well.
Acrylic resin can be dissolved with Acetone (very strong) and Xylene
Use a Q-tip with sparing amount of solvent on it and mask area around the electronic component with painter's masking tape.
Silicone resin use Dicone NC-9 on Q-tip using same method.
Urethane resin use Isopropyl 99%
Since there is no way to know which resin was used, start with the Isopropyl to see if that works.
If not then knowing that Acrylic would be the most obvious choice as a coating, I'd then use Xylene.
But make sure you mask off the area.
If no effect then use the Dicone.
It is safe on PCB's
Thanks for your time 😊
Wow good job in dishing out these information thanks
PCB Board 😂 Sorry - bit of an inside joke
The most importand question about it is not how to remove it or "he does not like it". The question is why it is not put back on. it can be just a coat of clearcoat. Car needs this for moisture and humidity changes. I understand the hate , but it it there for a reaseon and decent repair would end with that coat or similar back on there. Also thanks for good explanation.
It's a thin conformal coating and not at all hard to deal with. I use plastic scrapers to remove the bulk of it.
MG Chemicals 8310A - Conformal coating stripper - Gel. Try that stuff out Alex! All the info ive learned from you im excited to pass 1% knowledge to you 💙
It is always a pleasure to work with customers who understand and appreciate the efforts you are putting in order to make the job done. Another amazing video💪
Bot
I work for an engineering company that designs and manufactures custom electronics. A lot of our boards receive this conformal coating. Anytime a board needs to be reworked then acetone is used to strip the coating before soldering.
Your information really impactful....
Wow.
I have a few lads that comes in all the time for small auto electronic repair and they're the customers I really like , they never ask for it to be done asap as mostly the part is either stupidly expensive or has a lead time of a few weeks to get a new one. They never complain about the prices and I'm very reasonable because It's little jobs like this is what I love , they hand you the board or part ready to go or I tell them look take it to bits and just give me the board or what needs to be done and I'll do it while you wait. I tried to charge a guy 10 euro once for soldering a new smd led onto a dashboard as he had it ready and 10 leds on a strip, he threw a fifty at me and left me with rest of the leds for next time.
Good job with the conformal removal. A few TH-cam channels have various methods of conformal rework, one in particular is "Rework and Repair 'Conformal Coating Removal' " on the Paceworldwide channel. If solvents are suggested, it may be difficult to source if someone is currently in California. There's also a section in the IPC 7711/7721 titled "Coating Removal, Identification of Conformal Coating" which has suggested methods as well.
Just my 2 cents.
I deal with this conformal coating daily- Use various products to remove it. I liked the BGA Blade idea you used under the chip but did have me nervous about a pads coming off. Obviously experience plays a part to not damage anything. The blade scraped the coating nicely as well without damaging anything. Definitely an "over come and adapt" situation. Nice
What about yellowish rubber-like material that doesnt come off with Acetone?
@@farmdve leave it longer and it will
"Better Than Factory" and 'A work of Art.'... It's a pleasure watching the master at work...
Yeah, only corrosion protection is gone now. Better then factory :)
@@aspinx ...but it's a work of Art...lol
Miracle repair my friend. The polyurethane coat is a pain. But you did it brilliently. Good job
True. Conformal coating is a nightmare to all repair shops. There's actually a solvent that can remove conformal coating, but I forgot what. It's not even commonly used in the industry where they use conformal coating treatment for their customers. The purpose is not only to protect the board from moisture/liquid attack, but also most likely encouraged that the board is non-repairable.
try MICROCARE SUPRCLEAN
Bro this is art not fixing, love watching your talent. All the best!
The customer is very generous, pays well and brings interesting stuff to work on and content for the channel 😂😂😂
The conformal coating has a number of advantages including protection from humidity, debris, and oil. Perhaps it might be useful to be able to remove and then replace the conformal coating. There are pen-like solvent applicators that allow spot removal of the coating.
my razor blade works just fine. on motorbike eeprom the it's usually under a half inch of silicone, then all this bs on top of everything else.
@@RocksmithLocksmith Not sure I'd want to try the razor blade on some type of polymer coating on a fine-pitched microcontroller IC. But not surprised that it worked for you.
For repair work these conformal coatings are a real pain. I understand why they are used, but the silicone type is the easiest to work with. You very rarely even see the softer silicone type used these days. The worst for me is the full epoxy resin type potting. It's not even worth trying usually. You did an excellent job Alex without using a removal aid (chemical removal) it is very difficult to work with for sure.
We had that conformal coating on every thing we worked on in the Military way back in the 60s. Had none of the fancy tools and even soldered in electron tubes . The once you dig thru the coatings the traces would come off the PC board if you just looked at it.
Different but still very difficult. Love your techniques.
I have worked on similar module and I have successfully made this mcu virgin few months ago. Without removing from the board.
Bro very very nice effort I like it Only one thing I want to add if you donot mind that There are stuff available called conformal coating & conformal coating removal also. I am using those. One more thing I want to add that because it is used in a car in which many things can happen like rain ,vibration etc. so before handing over to the customer please do the coating overnight and then handover to him, Thanks
You are the man for accurate soldering tasks!!
i work manufacturing electronic boards for 15 years, with our coat we use nitro anti-fog thinner or DOLPH’S T-200 to remove the coat. I don't know if is the same coat but workfor us, you have to put the product on board and let it there for 10-15 mins .
You should try using the grinding pen first to clean the crap of the pins, then use a low melt solder. That's the only way I found around it. Great video as always brother
Another FANTASTIC video. Always love seeing pin by pin work
Great work! Chemicals aside, what about using a square window aluminum layer to isolate all the components from the chip area. That could prevent 'browning' the chip surroundings...
Welcome to our world Alex, the automotive electronics.
This is one of the easier ones
Nicely done
Alex, have you tried any of the proprietary conformal coating removers like 8309? I think they need to be used outdoors so may not be practical for your area. Keep up the great videos and well done with this one. 😀👍
... and if I’d realised the chip was the wrong way up I’d probably find something to stub my toe on before repeating the job.
Crisp, crunchy and satisfying. As always, nice video
Looks like a SPC560B60L3 chip. Made by STMicroelectronics. It is a 32-bit Power Architecture MCU for Automotive Body and Gateway Applications. Less than $11.56 for small quataties.
Alex hello from lebanon i used to fix that type of boards only thing u must do is a little bit of thinner clean the zone and try to solder
A real craftsman at work, great job!
You sir are an artist with your talent for soldering .
Always a great learning experience, but you make it fun to watch, too! You may have missed your calling as a comedian😂😂
Land Rover ownership is very expensive indeed! Amazing work! 😀
The Land Rovers are designed to go in 1m of water, it is normal that the card is a varnish of tropicalization. Thank you for your patience and your videos.
Not after this repair. It's prone to corrosion now.
I loved the way that stuff scrapped off so satisfying
Its clear varnish to prevent corrosion. Can be cleaned with paint. thinner. Same coatings on medical equipment boards also.
Your experience make this very difficult job look simple
Today i too struggled badly, unfortunately i don't have blade to life the chip up.
Later i will try again, this video helpful for me.
When keeping the old component is not the issue, just cut the MCU pins with a fine and sharp tool to not to damage the pads, then remove the pins leftovers with solder and wick.
What i was thinking'
That was a real difficult job, very risky but you did it good. Congrats Alex
I hate conformal coating too! I had to
re-spray it on the PC board after repairing it. I would use Acetone to clean the brown burnt conformal coating and re-spray the conformal coating.
Greetings. Thanks always for sharing your knowledge. Major appliances main boards are also coated with that conformal coating.
One of the tasks at my first job was applying a conformal coat to circuit boards. We went through so many rattle cans of Krylon! Nasty stuff. Breathing protection is essential.
I used to do that with a normal hakko soldering iron. As you said, flux makes it possible. In a pinch, I have removed old chips with knife and replaced with a weller gas iron.
Wow, I've never seen that move before, where you dragged the solder over the top of the chip. You should name that technique, something like "Alex's Solder Shuffle", great stuff!
It's a very common technique used on surface mount chips.
The solder blob techique by NF. Great work.👍
There are coating cleaning chemicals available in the market. You can get the job done very quickly with these.
There are Resin, polymer desolvers and solvents for this but you have to know what type of resin they are using and car manufacturers use several different kinds. But I would say you would find them on the internet. You might have to try different types to see which ones work and which ones don't.
Educational and entertaining. Very good work. Thanks
I use a small amount of paint stripper apply with a small brush leave until it starts peeling then remove works a treat everytime , just make sure you remove all the stripper 👍
Techspray 2510.
2510-P pint can
2510-N Pen about the size of a paint marker.
Might be difficult in Cali!
Pens can be ordered, but the pint cannot be shipped to a home address anywhere in the U.S.
They also have replacement coating to replace it after you get done to end the job up...
"Better than Factory" !
According to the SDS, the active ingredient of that Techspray product is Tetrahydrofuran, a fairly common solvent & degreaser.
Great job done !😅
I like your videos, left one solder ball near the chip😁
I use a conformal coating remover and brass wire brush usually to remove conformal coating for automotive electronics.
👍 do it right the first time. Does acetone help remove the coating?
Interested to know whether the programming at customer end was successful after doing this .. soldering job
you know your the best when you try to talk customers OUT of using your services
You did not gave up, nice job nice customer.
Your pin1 corner had the extra large feedthrough at it when you first marked it. Later it looks like you used a different corner as pin 1 when you soldered the new chip in.
Hi.
I have found that most conformal coatings come off with some acetone..😊
O just keep the acetone away from connectors..😊 😉
Use Wurth engine seal remover - works 100% for coat. It is safe to use if do not let it on aPCB too long. I use it in my job almost every week . I work on vehicle electronic DV.
Wouldn't a little acteone and a q-tip to remove the coating beforehand helped a bit?
Bro this cot removes with Acetone solution or isopropanol
Is this a plug and play situation with the chip or do you have to program it before hand?
Does it not help by putting Capstan tape around the Chip to stop the coating around it from going Brown?
Its conformal coating.
Protects the board against corrosion and vibration - both big issues in automotive/machinery applications.
That conformal coating is really hard to get off even with the chemicals to do it. I've done it and sometimes it takes days of soaking to get it soft enough to try and remove it.
I use MG Chemicals 422C silicone conformal coating on PCBs in marine grade beacon strobes. It protects the strobe beacon PCBs installed on oil rigs in the Gulf of Mexico from water ingress and condensation. Luckily the boards are available and under $300 and just get replaced when faulty. But MG Chemicals does make a silicone conformal coating remover "8309" if necessary.
Damn i have some solderskills but this is next level ! Like factory appart from the coating discoloration ... 👌
Awesome and great job , where is xour dhop man?
I thought you were going to apply that green uv goo at the end to restore that conformal coating
Many people are saying acetone and it is possible that could work, I don’t know what that stuff is. Jo was thinking to clean the area with MEK, then you can clean with alcohol before heating it up.
It would be cool to know if the repair worked as planned.
Use Label remover gel i use that for the same protect what you have on your PCB ! It works really good and don't harm the PCB !
Conformal coatings can usually be entirely removed with an acetone bath or spot removed with a conformal coating removal pen.
Another great video Alex, can you please tell me if you ship items from your store to the UK. Thanks.
It's a moisture sealant that is applied to all electronics exposed to the outdoors / elements. Cars, Aircraft, Boats, Trains, Subs, objects in space, etc. Even remote control cars and planes, boats, etc. There is a chemical neutralizer and a replacement spray.
The Trick i've used on thease in the past is to run a scalpel blade along the legs and just shear them off the IC' then low-melt the pins from behind also sometimes Acetone will soften the Conformal coating making it possible to peel chunks like a sunburn..
Try Xylene. Your hot air is too hot…When using to the hot air use a wooden pointed tool to scrape.
What is that coating made of, curious.?
They are often acrylic, silicone or polyurethane resin. There are some other ones as well.
Feeling the force the ball is :) Good job though!
It is spray plastic for electronics... for moisture protection
This coating does 2 things: 1) prevents moisture 2) shows where heat comes. There is cleaning liquid like acetone, these coverings are variable. Sometimes ECU s are first filled with glass pieces and then filled all with jelly to cover it all.
Comco Inc supply a micro-blaster that is used to remove conformal coatings… very precise… works well
I have an amazing conformal coating remover made by mg chemicals 8310A, takes a few minutes to soften coating and wipe away, Job done.
Would try acetone aswell to remove coating
Please let us know if the locksmith was able to get that board working after programming the chip.
Is soldering by using solderpaste not a better way for working on TQFP ics?
I believe acetone will take off the conformal coating (edit: acetone may damage the board). I would apply new conformal coating as this is done to make the board water resistant. Without it corrosion can build up.
These chips can be unlocked if I’m not mistaken. I use the keytool plus and although they are one time program they can be Virginized. I have not done it personally on a kvm newer then 2018 but I have seen it done on the video that I watched before this one.
It's working out better than i thought it would
The solvent paint thinner is very good at removing the varnish but it can also erase any printed information on the chip also if thats the case
A perfect job as always.
There are many ways to remove the coating. What I like to do is spray some brake clean around the IC let it soak for a minute. It will all corode and turn white(might damage ICs around be careful cause it eats through plastic) and then i spray original WD-40 on it and clean it with esd brush. Does the job everytime. There are removers of it as well and they are widely available, but I never had problems with brake cleaner and wd40.
Or you can scrape it of from pins with exacto knife.
Solid work brooo, you da solder master
another great vid,,,, do you get feedback from customer if all working ok,,,,,,,,,
When you are using low melt solder, do you change the temperature of your soldering iron or does it just stay balled like that regardless of the iron temp?
I attempted my fist micro usb replacement today with only a soldering Iron I removed the one from the donor board just fine .Then lifted a pad on the board I wanted to use !!! If only I had good flux …
Eid kareem ya Alex. Great work as usual.
I use to use acetone to clean the coating on washing machine and refrigerator board .
$4k, sounds about right. Toyota dealership near me quoted $240 for key fob programming alone- that's without the replacement fob. Simple 5 minute reflash procedure, nothing more, for $240. Got an OBD2 cable and a cracked version of Techstream for $30, problem solved. Infinite reprograms babyyy. Sure beats having to replace an MCU though... wtf is Land Rover thinking?
Oh and an additional benefit of the DIY Techstream setup- ECU updates are free too. Toyota dealerships have charged upwards of $150 to get those done. Sleazy business!