Best way for read 95128/256 in FEM w/o remove eeprom

[Fallen]

The best way to remove any varnish on all eeprom legs is to cover all the legs with a small amount flux and then heat each leg up individually until the solder melts on each leg.
This heating process will break up and varnish and then it can be easily wiped away with alcohol spray and an ear bud.

I have often had problems with VVDI-PROG writing these in-circuit, I do not know why.
Orange-5 is the go to for me on these.

[Spiritech]

No clip-over method is going to remove all the conformal coating enough to get good contact for read/write. Always chemically or mechanically remove the conformal coating before attempting to read/write the EEPROM in any ecu. I usually mechanically remove with an x-acto style craft knife, they're easily found at hobby stores, have cheap replaceable blades and are really sharp. Just keep your hands steady or you might cut something important. When you've gone and soldered all you've done is removed it with heat. Chemical removal doesn't really seem to work well on the harder conformal coatings used by BMW, but I will occasionally use a limonene based flux cleaning solvent which is PCB safe on softer coatings like you see in Toyota or Mazda ECUs.

[fred77]

Well said Spirit - Also many clips are rubbish the autohex one worked but tried others no joy

[rob h]

I left the paint stripper on it overnight. Just to see what it does.

The varnish swells up, and loosens.
The small ammount stripper, It dries up.

Zero, damage to the board, no damaged to the metal eeprom surface of the eeprom.

With a hard nylon brush, i could remove all residue.

All the varnish, on and between the legs will be loose and or gone.

You can even set a cheap pomona clamp on it.

Months after, it still looks fine.
I always rinse off with brake clearen.
And dont aply any new protection.
( you could, there are sprays, you can aplly afterwards. )

---------------------------------------------------------
I do have a pogo pin, clamp, i can mount on.
I do have a pogo, touchholder, i can push down, touching the eeprom pins shoulders.
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I seen some, that scrape the pins, scrathing the pins, making the inner copper visible.
Please dont do that.
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Also Cas4 , to remove the components, also best done with this paintstripper.
If you heat up the varnish, with hotair. It will turn the varnish darkbrown/black. So dont use hotair when there is still varnish.

[issam216]

I left the paint stripper on it overnight. Just to see what it does.

The varnish swells up, and loosens.
The small ammount stripper, It dries up.

Zero, damage to the board, no damaged to the metal eeprom surface of the eeprom.

With a hard nylon brush, i could remove all residue.

All the varnish, on and between the legs will be loose and or gone.

You can even set a cheap pomona clamp on it.

Months after, it still looks fine.
I always rinse off with brake clearen.
And dont aply any new protection.
( you could, there are sprays, you can aplly afterwards. )

---------------------------------------------------------
I do have a pogo pin, clamp, i can mount on.
I do have a pogo, touchholder, i can push down, touching the eeprom pins shoulders.
------------------------------------------------------------------------------------------------

I seen some, that scrape the pins, scrathing the pins, making the inner copper visible.
Please dont do that.
-----------------------



Also Cas4 , to remove the components, also best done with this paintstripper.
If you heat up the varnish, with hotair. It will turn the varnish darkbrown/black. So dont use hotair when there is still varnish.

i use cellulose thiner (diluant cellulosique) to clean contact and its very useful and dont damage contact and cheap

[rob h]

You aply it, with a q-tip?
Does it vapourize, and smell?

I used to buy, nail polisch remover. But can not find a strong solution anymore.
It is more for girls, then us men.

The good thing, about the paintstripper, from a spray can.
It is gel. And stays on the spot i aplly it.
If i keeped it levelled, it wont run all over.

[SAMDoctor]

MG Chemicals conformal coating remover

Conformal Coating Remover Gel (mgchemicals.com)

[issam216]

You aply it, with a q-tip?
Does it vapourize, and smell?

I used to buy, nail polisch remover. But can not find a strong solution anymore.
It is more for girls, then us men.

The good thing, about the paintstripper, from a spray can.
It is gel. And stays on the spot i aplly it.
If i keeped it levelled, it wont run all over.

i apply it with teeth brusher the good thing with cellulose thinner that he vaporise after doing the cleaning job and exactly what i need ... process it quite simple apply hot air on the surface of eeprom to destroy vernish but not engouth to remove the eeprom and then with teeth brusher apply cellulose to clean up eeprom legs and then i use the acdp clip to read the eeprom withaout removing it..

[adhdbaby]

The new style ACDP clip works for me, and works with either VVDI or Autel. For the conformal coating, I carefully scrape it off with a small flathead screwdriver or exacto knife, then clean residue with qtip and rubbing alcohol. I'm sure it's not the best or smartest or safest way, but it has worked for me.

I use acdp adapter but not possible to read.

I would suggest using the newer style ACDP adapter which has two studs that you line up to 2 holes on the FEM circuit board. Part number SO653. Worked easily for me, but I was not able to read with the old style clip like in your picture.
Impressive job soldering the wires to the EEPROM though, in your next pic. I tried that too, but too many other small components close by made it difficult.

[jodge]

Guys use proper tools for the job. This stuff is decades old and never ever failed me.
https://elektronik-lavpris.dk/images...1642506445.jpg

it's a fiberglass pen. With a very few move it's cleaning everything doesn't matter if is adhesive, protective lacquer or whatever You can literally shave off the top of the eeprom. If you want it and if you have time.
The only disadvatage is the fiberglass debris. That is hurt like hell when it's sting your finger

[jordiksvk]

i am thinkint simple why is not possible read in circuit for more boards....
its because the processor is alive also when power is on eeprom...
...and then processor and programmer comunicate with the eeprom simultaneously.
possible solution -> make jumper on processor Xtal

if helped, tress thx it cost u Zero...
regards
j.

[fuzz1]

Hi
I don't understand how to make jumper on xtal. Where do you connect it to?

[Weasel3]

3M™ Scotch-Weld AC68 Cyanoacrylate Debonder 20ml

Bought a small bottle from a different vendor I while back.
Not had the chance to test it yet, on any eeprom.

[rob h]

Both xhorse and yanhua have a touch holder.
With 2 screws, and clamps.

They connect, on the eeprom pin shoulders, not the eeprom pin feet.

I leave it on, during the entire proces.
Only disconnect the ribbon, in between.

Paintstripper I use, does come in a spray can.
No mess to apply.