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OT: electronic contact cleaner on ram memory...?

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  • OT: electronic contact cleaner on ram memory...?

    A random problem with my Dell Win 7 laptop, it randomly got a blue screen and rebooted. This morning about four reboots before I got a home screen. Put in a new hard drive last week and reloaded Windows, still the problem. Even did a memory test with no indication of ram problem.

    My favorite used computer guy suggested bringing it in to the store so they could try exchanging memory just in case that was the problem. When the girl at the counter started looking she noticed it showed only 4G memory, but it has 2 4G sticks. A bit of switching the sticks around between slots we got it to stop randomly rebooting and recognize all the ram.

    Obviously there was a contact problem... is this the sort of situation to use a spray contact cleaner on if the problem should return?

  • #2
    I believe re-seating is the most effective way to fix a contact problem like that. Contact cleaner is more for contacts that open and close, so using it in conjunction with a re-seating may not be a bad idea.

    Ed
    For just a little more, you can do it yourself!

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    • #3
      You should have gold on gold.. so don't bother "cleaning". as above - reseating will be fine.

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      • #4
        Might not be gold, in which case it is corrosion does it. Use the cleaner then.
        1601

        Keep eye on ball.
        Hashim Khan

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        • #5
          Fingerprints can cause problems. Best cleaner if using any is ethyl alcohol. Totally non corrosive and leave no trace of anything. Next best is pure vodka.
          Free software for calculating bolt circles and similar: Click Here

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          • #6
            Gold. Does not tarnish , no need to use contaçt cleaner. In fact it may cauكe plastic to weaken

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            • #7
              White eraser. Best computer contact cleaner, and no worries with overspray.

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              • #8
                One product that does work well is Caig De-Oxit. Go to a high end audio store where they use it on connectors and noisy volume controls. Also works wonders on car electrical connectors.

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                • #9
                  most contact cleaners are alky, (I read the label) and even gold will get a buildup? of dust/grease/etc. so cleaning while out and re-inserting usually is the cure. Artist paintbrush for the contact area in the comp. Yes an eraser is good, but u still need to use cleaner to get rid of debris . There is also a spray product that is supposed to improve contact in electronic connections. Tried it but eehhhhh!

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                  • #10
                    Originally posted by Juiceclone View Post
                    ..... Tried it but eehhhhh!
                    It probably wasn't meant to be ingested.
                    Lynn (Huntsville, AL)

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                    • #11
                      Just in case the problem returns;

                      a) Many memory problems will pass the tests once or more. Memtest86 is a memory tester that you can set to run extensive and repeated testing. When I have a PC that has random crashes I run the memory tester overnight and it will often show one of three results; 1) no problem 2) same block of memory failing multiple times 3) random blocks of memory failure.

                      Memtest86 is a good tester because it runs without an OS, so it's a very minimal memory footprint and no drivers or configurations to go wrong.

                      B) With laptops the problem is sometimes not memory related but is instead heat related, more specifically CPU overheating due to bad contact between the CPU and it's heatsink or fans that are clogged / stopped. Just flipping the laptop upside down may shift the laptop enough to make it work for a short time.
                      At the end of the project, there is a profound difference between spare parts and extra parts.

                      Location: SF East Bay.

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                      • #12
                        Heavens NO. Do not use any abrasive cleaner on electronic contacts. If they are plated with gold or anything else, you can be dead sure that the thickness of that plating is as thin as they could possibly make it and any abrasive, even the mildest, will quickly remove it, exposing the base metal under it. The device will work better for a short time and then, as it corrodes again, it will get worse and you will be stuck with cleaning it over and over again.

                        Take the memory sticks out and gently clean the socket with 99% pure alcohol. Do not use tuner cleaner, it contains a lubricant. Other electronic contact cleaners are probably OK. I have never seen one of them have a bad effect on any plastic used on circuit boards and I spent my entire career repairing electronics. You will not be able to actually scrub the contacts in the sockets and you should not try. Just squirt the alcohol in there with some force. Let the flow do the job.

                        On the memory sticks, GENTLY wipe the contacts with a cloth or paper towel soaked with the alcohol or the contact cleaner. GENTLY! You are just trying to remove any fingerprints and dust. And go over them only once or twice, not over and over.

                        Note: I said I have never seen alcohol or any other electronic cleaner harm any plastics on PC boards and the is completely true. The only problems I have seen were with mechanical parts like switches and relays. If a cleaner washer into them it can carry dirt and oil into them and cause all manner of problems. Computers rarely have these mechanical components so you should be OK there. If you do have a problem with a switch or relay after using a cleaner on a PC board, the only solution is to wash those components with a massive amount of the same cleaner in order to wash out the contaminant that was washed in. This could take a quart or more of the cleaner and many flush and dry cycles. Been there, done that. Not fun. No tee shirt.



                        Originally posted by achtanelion View Post
                        White eraser. Best computer contact cleaner, and no worries with overspray.
                        Paul A.
                        SE Texas

                        Make it fit.
                        You can't win and there IS a penalty for trying!

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                        • #13
                          Originally posted by Paul Alciatore View Post
                          Heavens NO. Do not use any abrasive cleaner on electronic contacts. If they are plated with gold or anything else, you can be dead sure that the thickness of that plating is as thin as they could possibly make it and any abrasive, even the mildest, will quickly remove it, exposing the base metal under it. The device will work better for a short time and then, as it corrodes again, it will get worse and you will be stuck with cleaning it over and over again.
                          ....
                          + many.....

                          And I do not like even trying to wipe the tiny contacts on many boards.... especially NOT the 2 piece plug and socket type connectors. Often the boards are just plated traces, which are reasonably good, but for sure not perfect as to toughness. You can wipe those, but take it easy.

                          Back in the 1970's when I did electronic repair while in school, you could get away with the white erasers, usually. "Not no more", as the factory folks used to say...
                          1601

                          Keep eye on ball.
                          Hashim Khan

                          Comment


                          • #14
                            Originally posted by Evan View Post
                            Fingerprints can cause problems. Best cleaner if using any is ethyl alcohol. Totally non corrosive and leave no trace of anything. Next best is pure vodka.
                            Pure vodka is a long way from pure alcohol. 100 proof is only 50 % alcohol. I presume the rest is mostly water. You can get around 90% in the pharmacy but it is isopropal, not ethel. It works fine for cleaning contacts. Pure ethel is rather hard to obtain. Denatured is ethel with enough methel mixed in to make it toxic and undrinkable and of no interest to the ATF.

                            Sent from my SM-G900V using Tapatalk

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                            • #15
                              Here in B.C. last time I checked one can buy high quality ethanol at Saveon Foods under the Western Family brand in the pharmacy department. It is in the rubbing alcohol section in the same size bottle with half a litre for a few bucks. Look at the ingredients list and it is anhydrous ethanol 95%. The rest is water that is chemically combined with the ethanol because of how alcohol interacts with water. It does not say that it is in any way denatured either but I sure wouldn't try to drink it. It is what I use to machine aluminum.

                              As for the vodka, there is a brand from Eastern Canada that advertises that it is made from glacial ice water and pure triple filtered ethanol only. No idea if it still exists, I do not drink at all.
                              Free software for calculating bolt circles and similar: Click Here

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