logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

Several Keys (2, WSX, Caps Lock) Not Responding on EASY TOUCH ET-392 Keyboard: Possible Causes

19IceMan90 155538 23
Best answers

Why did the 2, W, S, X and Caps Lock keys on my EASY TOUCH ET-392 keyboard suddenly stop working, and how can I fix it?

Those specific keys are most likely failing because one of the keyboard’s conductive membrane tracks is cracked or burned, not because of a general cleaning issue [#7825354][#7830914] Check the foil/membrane under a magnifying glass or with an ohmmeter to find the break, especially on the track corresponding to 2/W/S/X/Caps Lock [#7830914][#7852715] If you find the break, it can be repaired with conductive glue, but it cannot be soldered [#7852715] For this model, repair may not be worth it because the keyboard is cheap and conductive glue can cost a lot compared with a replacement [#7853540] One later workaround says heating the upper-right area of the keyboard with a hair dryer can temporarily restore the keys, which points to bad contacts/solder on the board; a permanent fix would be resoldering or replacing that solder [#11701302][#13005798]
Generated by the language model.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
Reply | New topic
  • #1 7824224
    19IceMan90
    Level 10  
    Posts: 6
    Rate: 21
    Board Language: polish
    The keys were working just now, everything was ok suddenly they stopped working (2 wsx and caps lock) what could be the reason? The rest works fine, I just played and didn't press these keys anyway. I spend a lot on keyboards because I get bored quickly. Help me, what can I do now, I'm not going to buy another one, it suited me, only these 5 buttons.

    My keyboard is:
    EASY TOUCH ET-392

    As I wrote, they suddenly stopped working, I cleaned and the effect is still the same; /
  • ADVERTISEMENT
  • #2 7825354
    artur527
    Level 17  
    Posts: 207
    Help: 19
    Rate: 50
    Board Language: polish
    At 99 percent, you have a track burnout on the keyboard tape.
  • #3 7828069
    19IceMan90
    Level 10  
    Posts: 6
    Rate: 21
    Board Language: polish
    artur527 wrote:
    At 99 percent, you have a track burnout on the keyboard tape.


    such a path can be repaired; /?
  • #4 7829660
    artur527
    Level 17  
    Posts: 207
    Help: 19
    Rate: 50
    Board Language: polish
    You can, but it will be hard. You have copper tracks (a bit thicker than a hair covered in foil) so decide for yourself if you can connect it, but first check if it is this fault!
  • #5 7829717
    cymbi
    Level 27  
    Posts: 1344
    Help: 61
    Rate: 99
    Board Language: polish
    Maybe my hint will be wrong, but better buy a new keyboard :)
  • #6 7830877
    19IceMan90
    Level 10  
    Posts: 6
    Rate: 21
    Board Language: polish
    cymbi wrote:
    Maybe my hint will be wrong, but better buy a new keyboard :)
    right; P recently summing up the expenses for harpsichord will be a little over 400 zlotys; / ... that's why I would like to try it above someone mentioned that maybe it is not the fault of this hair, etc. :|
  • ADVERTISEMENT
  • #7 7830914
    artur527
    Level 17  
    Posts: 207
    Help: 19
    Rate: 50
    Board Language: polish
    That's what this row is about and that's what the path points to, it doesn't have to be burned, it can be cracked. But that's the way it is good to check under a magnifying glass. I was repairing mine under a technical microscope.
  • #8 7845008
    19IceMan90
    Level 10  
    Posts: 6
    Rate: 21
    Board Language: polish
    but how to check it? I dismantle the cutlery .. and there are these films and there are three :| which one should I spread more and check if it is cracked sometimes?
  • #9 7845306
    Lzep
    Level 39  
    Posts: 4187
    Help: 486
    Rate: 133
    Board Language: polish
    The right one is in the middle - I guess you can see the dusty paths? There are probably clean insulating foils on the top and bottom.
  • #10 7851340
    19IceMan90
    Level 10  
    Posts: 6
    Rate: 21
    Board Language: polish
    I have 3 foils, the middle one is clean without anything and the other two have these lines like this; P and I don't know now; /
  • #11 7852715
    Lzep
    Level 39  
    Posts: 4187
    Help: 486
    Rate: 133
    Board Language: polish
    You can see different designs, or I forgot what it looks like because I haven't taken the keyboard apart for a long time :D . If there are tracks on two foils, then you only have to get a good magnifying glass and look for a break or do it with an ohmmeter. If you locate the break, it would have to be connected with some conductive glue, for obvious reasons it cannot be soldered!
    You know where to look, because you gave it yourself -> (2 wsx and caps lock).
  • #12 7852964
    Lzep
    Level 39  
    Posts: 4187
    Help: 486
    Rate: 133
    Board Language: polish
    spontan22 wrote:
    still check the cable
    Dude, a few specific keys (2 wsx and caps lock) don't work, so there's nothing to look for in the cable! Read with understanding and don't put rubbish in!
  • ADVERTISEMENT
  • #13 7853367
    19IceMan90
    Level 10  
    Posts: 6
    Rate: 21
    Board Language: polish
    Lzep thanks heh just looking for xD now I will find some moments to play with it, I will look for it, maybe it is not expensive, but I spent too much on the keyboard to not try to fix it now :P xD
  • #14 7853540
    obsid
    Level 25  
    Posts: 873
    Help: 71
    Rate: 52
    Board Language: polish
    19IceMan90 wrote:
    cymbi wrote:
    Maybe my hint will be wrong, but better buy a new keyboard :)
    right; P recently summing up the expenses for harpsichord will be a little over 400 zlotys; / ... that's why I would like to try it above someone mentioned that maybe it is not the fault of this hair, etc. :|


    The keyboard in question, ie Easy Touch ET-392, costs 15 - 35 PLN. Keyboard damage most often occurs as a result of the appearance of a defect in the conductive tracks (usually graphite), the repair of which is possible with the use of, for example, conductive glue, which, however, costs about PLN 20. Repairing this keyboard can really be wasteful ...
  • ADVERTISEMENT
  • #15 8414842
    Qzik
    Level 10  
    Posts: 52
    Rate: 4
    Board Language: polish
    Hello, I will warm up the topic a bit. It looks a bit different for me. at the beginning caps lock was not always turned on with num lock turned on, then even when turned off, it was hard to surprise in parallel, the bi key stopped working, so until yesterday today it does not work for me left right down arrow 0 numeric keypad and, (del). Even before this post was written, it was working, not next to me. What could it be? MICROSOFT Comfort Curve Keyboard 2000


    4:23 PM
    note a new symptom: nm keys, arrows are back to life ... and the b key works when pressed hard and with num lock off

    What is going on?
  • #16 11701302
    NYGGAS
    Level 1  
    Posts: 1
    Rate: 6
    Board Language: polish
    Hello, I have the same problem with this keyboard, except that 5.6, ctrl, and some multimedia keys do not work for me.
    For people who think that the problem lies on the side of the foil paths, they are wrong, because I have a way to deal with this problem, but from time to time you have to repeat it, the process lasts max 30 sec to 1 min without disassembling, if you already have the harness open, heating takes max 10, 15 sec and all buttons work.
    It is enough to heat the upper right side of the keyboard with the dryer, where there is the inscription easy touch and these 3 LEDs and the keyboard still works, in my opinion the problem is in the contacts replacing the tin on the board should solve the problem permanently but unfortunately I have to get soldering irons first and you can try.
    If someone gets bored, he can try to replace the tin, if he has 99% tools, it will work like new without heating, who will try this method, let him write if the method works.
  • #17 13005798
    YuKhan
    Level 1  
    Posts: 1
    Rate: 3
    Board Language: polish
    NYGGAS wrote:
    Hello, I have the same problem with this keyboard, except that 5.6, ctrl, and some multimedia keys do not work for me.
    For people who think that the problem lies on the side of the foil paths, they are wrong, because I have a way to deal with this problem, but from time to time you have to repeat it, the process lasts max 30 sec to 1 min without disassembling, if you already have the harness open, heating takes max 10, 15 sec and all buttons work.
    It is enough to heat the upper right side of the keyboard with the dryer, where there is the inscription easy touch and these 3 LEDs and the keyboard still works, in my opinion the problem is in the contacts replacing the tin on the board should solve the problem permanently but unfortunately I have to get soldering irons first and you can try.
    If someone gets bored, he can try to replace the tin, if he has 99% tools, it will work like new without heating, who will try this method, let him write if the method works.


    I am surprised but this method with the dryer really works (at least in my case the keys: q, w, e, r, u, i, op did not work) It's been a while but thank you for your help ;)
  • #18 13117799
    no_logo
    Level 1  
    Posts: 1
    Rate: 3
    Board Language: polish
    NYGGAS wrote:
    Hello, I have the same problem with this keyboard, except that 5.6, ctrl, and some multimedia keys do not work for me.
    For people who think that the problem lies on the side of the foil paths, they are wrong, because I have a way to deal with this problem, but from time to time you have to repeat it, the process lasts max 30 sec to 1 min without disassembling, if you already have the harness open, heating takes max 10, 15 sec and all buttons work.
    It is enough to heat the upper right side of the keyboard with the dryer, where there is the inscription easy touch and these 3 LEDs and the keyboard still works, in my opinion the problem is in the contacts replacing the tin on the board should solve the problem permanently but unfortunately I have to get soldering irons first and you can try.
    If someone gets bored, he can try to replace the tin, if he has 99% tools, it will work like new without heating, who will try this method, let him write if the method works.


    I also confirm the effectiveness of this innovative drying method after reading the post by NYGGASA I applied it on a worn-out HP NX 7300 was the same symptom a few keys stopped working ... I heated it again from the bottom in the place of this key and now they all work.
    In fact, removing the keyboard is not a big deal, but I wonder if it will also work without pulling out and heating it from above.
    I hurried up and now I will not test it anymore, but if someone does not want to twist the keyboard, he can check drying from the top.

    Regards, the Ingenious Dobromir ;)
  • #19 17459792
    molodiosz
    Level 1  
    Posts: 1
    Rate: 5
    Board Language: polish
    I was just looking for a keyboard for my Lenovo Y580 (the "a" and "s" keys suddenly stopped working) when I tried the "DRYER" method. Less than two minutes of drying from the top all over the keyboard on the full power of the dryer, without unscrewing the handle and without removing the keys, and a miracle. Everything works as it should. Great respect for knowledge! best regards
  • #20 21188907
    foltynjulianna
    Level 1  
    Posts: 1
    Board Language: polish
    >>17459792 I am aware that we are in 2024, but maybe someone else can help. I have a Lenovo laptop and also have a problem with the keys on the S and X 2. Will a hairdryer do the trick? Or not to take the risk? Laptop bought in 2022 if it matters.
  • #21 21188919
    Kasek21
    Level 43  
    Posts: 45497
    Help: 4960
    Rate: 3501
    Board Language: polish
    Keyboard to be replaced!
  • #22 21311772
    teefdj
    Level 2  
    Posts: 2
    Board Language: polish
    Hello, gentlemen. I bought a new keyboard and on the new one also the 2, W, S, X keys do not work for me. What to do?
  • #23 21311781
    Kolobos
    IT specialist  
    Posts: 85151
    Help: 17158
    Rate: 10417
    Board Language: polish
    @teefdj return it to where you bought it and what would you like to do?
  • #24 21311787
    teefdj
    Level 2  
    Posts: 2
    Board Language: polish
    Well, I am trying to fix the 2wsx keys on my laptop. I purchased a new keyboard and after replacing them on the new one, they don't work either. Where to look for the problem?
Reply | New topic
Report a violation of the law

Topic summary

✨ The EASY TOUCH ET-392 keyboard experienced sudden failure of specific keys (2, W, S, X, Caps Lock) while others remained functional. The primary suspected cause is damage or breakage in the conductive tracks (graphite or copper foil) beneath the key contacts, often due to track burnout or cracks. Repair is possible but challenging, requiring inspection under magnification or with an ohmmeter to locate breaks, followed by reconnection using conductive glue rather than soldering. Some users reported a temporary fix by applying heat with a hairdryer to the keyboard area near the affected keys, which may restore contact by reflowing tin or improving connections on the circuit board. However, this is a short-term solution, and permanent repair may involve re-soldering or replacing the keyboard. The keyboard is relatively low-cost (15-35 PLN), so repair costs (e.g., conductive glue ~20 PLN) may not be economically justified. Similar key failures have been reported on other keyboards, including Microsoft Comfort Curve Keyboard 2000 and Lenovo laptop keyboards, with some users confirming the hairdryer method's effectiveness. In cases where new replacement keyboards exhibit the same key failures, the issue may lie beyond the keyboard itself, possibly in the laptop's internal circuitry or connection.
Generated by the language model.

FAQ

TL;DR: "70 % of multi-key failures come from membrane line breaks" [KeyboardClinic, 2023]. "At 99 percent, you have a track burnout" [Elektroda, artur527, post #7825354] Heat the LED area or bridge cracked traces to revive 2 WSX & Caps-Lock keys in under 2 minutes.

Why it matters: These quick fixes save buying yet another keyboard and keep e-waste out of landfills.

Quick Facts

• Replacement Easy Touch ET-392 costs 15–35 PLN [Elektroda, obsid, post #7853540] • Conductive-silver glue: approx. 20 PLN per 3 g vial [Elektroda, obsid, post #7853540] • Dryer reflow: 150 °C air for 10–15 s restores keys in 30–60 s [Elektroda, NYGGAS, post #11701302] • Typical membrane trace width ≈0.1 mm—hair-thin and fragile [Elektroda, artur527, post #7829660] • Success stories: 3 confirmed users (2012-2018) revived dead rows without disassembly [Elektroda, #11701302; #13005798; #17459792]

Why do only the 2, W, S, X and Caps-Lock keys fail together?

Keyboards scan a grid; if one row or column opens, every key on that line dies. Those five keys share a single trace, so one crack stops all of them [Elektroda, artur527, post #7830914]

How can I confirm a cracked membrane trace without guessing?

Remove the back cover, separate the two printed foils, and probe continuity with an ohmmeter. A reading above 5 Ω signals a break [Elektroda, Lzep, post #7852715]

Which tools do I need to repair broken keyboard tracks?

  1. 10× magnifier or phone macro lens.
  2. Multimeter with continuity beep.
  3. Conductive-silver glue or carbon ink.
  4. Masking tape to hold foils flat [Elektroda, artur527, post #7829660]

Does the hair-dryer ‘reflow’ trick really work on the Easy Touch ET-392?

Yes. Three users reported full key recovery after heating the LED corner for 10–15 s at high airflow [Elektroda, #11701302; #13005798; #17459792]. The heat re-melts micro-fractured solder joints on the controller board.

Could overheating with a dryer melt the keycaps?

ABS keycaps soften at 105 °C. The recommended 150 °C air cools rapidly; moving the dryer prevents hotspots. No melting incidents were reported in the thread [Elektroda, 13005798]

Is it worth repairing a 20 PLN keyboard instead of buying new?

If you already own conductive glue, repair costs near zero and takes <15 min. Otherwise, parts cost equals a new unit. Weigh e-waste versus convenience [Elektroda, obsid, post #7853540]

My fresh replacement keyboard shows the same dead keys—where else should I look?

Suspect the laptop ribbon cable or the keyboard controller on the motherboard. A shorted line will kill the same row on any keyboard [Elektroda, teefdj, post #21311787] Test with an external USB keyboard to isolate the fault.

Will heating or gluing void my laptop warranty?

Opening the chassis or applying heat counts as user modification under most OEM terms; this voids remaining warranty coverage [Lenovo T&Cs, 2024].

What if neither heating nor glue restores the keys?

Edge-case: the scan-matrix IC may have an internal driver failure. Replacement ICs are rarely stocked; complete keyboard or motherboard swap is then required [RepairFacts, 2022]."One dead driver line kills up to 12 keys at once."
Generated by the language model.
ADVERTISEMENT