How Many Screens Have You "Accidentally Cracked" ?

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • ReeceyBurger123
    Never Give Up !
    • May 2014
    • 7325
    • Britain

    #1

    How Many Screens Have You "Accidentally Cracked" ?

    Just wandering people how many Crt, Lcd, Pdp or Oled screens have you cracked accidentally ? This could be when repairing the display or just pure harsh luck.

    I can proudly say in all 322 Tvs I have repaired (so far) I have never accidentally cracked a single display Of course some that haven't been economically repairable have met the sole of my foot lol
    Last edited by ReeceyBurger123; 12-21-2015, 11:33 AM.
    Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

    https://www.facebook.com/Telford-Tel...7894576335359/
  • eccerr0r
    Solder Sloth
    • Nov 2012
    • 8698
    • USA

    #2
    Re: How Many Screens Have You "Accidentally Cracked" ?

    1. I dropped a CRT monitor.
    It wasn't as spectacular as I thought it would be.

    Comment

    • Pentium4
      CapXon Be Gone
      • Sep 2011
      • 3741
      • USA

      #3
      Re: How Many Screens Have You "Accidentally Cracked" ?

      Zero
      I find it amazing when you look on ebay and craiglist, to see how many "AS IS" units are because the screen is shattered. For TVs and monitors. I just don't know how it happens on such a large scale.

      Comment

      • xelectech
        retired tech
        • Nov 2014
        • 238
        • USA

        #4
        Re: How Many Screens Have You "Accidentally Cracked" ?

        Hm, just one so far. It was back in the mid 80's and I was carrying a so-called portable table model out to the customer's car. The thing must have weighed a good 75 lbs., the handle was at the top of the set - and it pulled free from the set. Probably busted some of the other tubes, too, talk about a downer .

        Comment

        • momaka
          master hoarder
          • May 2008
          • 12170
          • Bulgaria

          #5
          Re: How Many Screens Have You "Accidentally Cracked" ?

          I never cracked any either. Then again, I don't do that much work on LCD TVs and monitors. Only have repaired like 11 or so LCDs total.

          As for CRT - how do you crack that?!
          These things are tough to break. Even a story with pictures of one guy here (on BCN) accidentally having his 100 lbs (~45 Kg) 24" CRT roll down the stairs a full story and still working afterwards.

          Originally posted by Pentium4
          I just don't know how it happens on such a large scale.
          Well, for LCDs (especially TVs), the Wii-mote usually does it.
          https://www.youtube.com/watch?v=a07W2t2wcRA&t=4m55s
          Last edited by momaka; 12-23-2015, 12:07 AM.

          Comment

          • eccerr0r
            Solder Sloth
            • Nov 2012
            • 8698
            • USA

            #6
            Re: How Many Screens Have You "Accidentally Cracked" ?

            I just dropped it from 3-4 ft when it slipped from my fingers, it fell straight down to the floor oriented the way you'd view it. Something caused a vibration and the stem cracked, letting the air in. At least I got a flyback transformer out of it to play with...

            I don't see myself breaking an LCD yet. Knock on wood. I bet my phones or laptop may be the first one...

            Comment

            • ReeceyBurger123
              Never Give Up !
              • May 2014
              • 7325
              • Britain

              #7
              Re: How Many Screens Have You "Accidentally Cracked" ?

              Lol
              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

              https://www.facebook.com/Telford-Tel...7894576335359/

              Comment

              • diif
                Badcaps Legend
                • Feb 2014
                • 6978
                • England

                #8
                Re: How Many Screens Have You "Accidentally Cracked" ?

                Just two on my Galaxy S3 and i managed to fcuk up a screen on a HP laptop. I didn't realise the LED circuitry was stuck to the bezel when I removed it and it tore the ribbon cable.

                Comment

                • stj
                  Great Sage 齊天大聖
                  • Dec 2009
                  • 30990
                  • Albion

                  #9
                  Re: How Many Screens Have You "Accidentally Cracked" ?

                  i have seen small crt's dropped so hard that the scan-coils have ripped the neck off the back of the tube!

                  usually on portable test gear that came down a ladder faster than the engineer!

                  Comment

                  • momaka
                    master hoarder
                    • May 2008
                    • 12170
                    • Bulgaria

                    #10
                    Re: How Many Screens Have You "Accidentally Cracked" ?

                    Originally posted by eccerr0r
                    I just dropped it from 3-4 ft when it slipped from my fingers, it fell straight down to the floor oriented the way you'd view it.
                    Interesting.
                    The front of the screen is usually the toughest part of the CRT.
                    https://www.youtube.com/watch?v=4el9omevmIs&t=2m51s

                    Comment

                    • Spork Schivago
                      Badcaps Legend
                      • Mar 2012
                      • 4734
                      • United States of America

                      #11
                      Re: How Many Screens Have You "Accidentally Cracked" ?

                      Usually the tablets / cell phones we get are already cracked. We have an Asus Memo Pad 8 (or maybe 7?) and we need to remove the digitizer and screen to clean it. There's water inside. My wife is a lot better at removing screens than I am. It's been awhile since she removed a good screen so she practiced on an old broken tablet we had. She didn't realize the screen adhesive was really strong and cracked the screen on the old broken one! Thankfully it wasn't the production one. Anyway, what she does now, she uses my Weller WHA900 Hot Air Rework Station to melt the adhesive a bit and uses these little suction cups to lift up the screen without bending the plastic.
                      -- Law of Expanding Memory: Applications Will Also Expand Until RAM Is Full

                      Comment

                      • eccerr0r
                        Solder Sloth
                        • Nov 2012
                        • 8698
                        • USA

                        #12
                        Re: How Many Screens Have You "Accidentally Cracked" ?

                        Originally posted by momaka
                        Interesting.
                        The front of the screen is usually the toughest part of the CRT.
                        https://www.youtube.com/watch?v=4el9omevmIs&t=2m51s
                        Eh no, not face down or up, the monitor is in the "normal" position how one would normally use a CRT. The neck is the weakest portion and it hit something internal and broke.

                        Comment

                        • stj
                          Great Sage 齊天大聖
                          • Dec 2009
                          • 30990
                          • Albion

                          #13
                          Re: How Many Screens Have You "Accidentally Cracked" ?

                          more likely the weight of the neck-pcb did it.

                          Comment

                          • momaka
                            master hoarder
                            • May 2008
                            • 12170
                            • Bulgaria

                            #14
                            Re: How Many Screens Have You "Accidentally Cracked" ?

                            Originally posted by eccerr0r
                            Eh no, not face down or up, the monitor is in the "normal" position how one would normally use a CRT.
                            Ah, okay. Now I understand what you meant when you said, "it fell straight down to the floor oriented the way you'd view it."

                            Originally posted by stj
                            more likely the weight of the neck-pcb did it.
                            Agreed.
                            Either that or the yoke/focus/deflection coils assembly. Lots of copper in those, so they do weight a lot. It's one of the things the copper scrappers around here always take.

                            Comment

                            • eccerr0r
                              Solder Sloth
                              • Nov 2012
                              • 8698
                              • USA

                              #15
                              Re: How Many Screens Have You "Accidentally Cracked" ?

                              Indeed quite possibly it was the gun drivers pcb attached to the end, then again, there are the people who had it survive drops. The yoke probably would be OK as it's getting to the bell which is quite a bit stronger - in my case the yoke was intact.

                              It was a 17" shadowmask monitor. I guess I wasn't too upset about it though I had bought it new. It was starting to have vertical amp noise introduced...alas you all can guess why...



                              BAD CAPS...

                              I still have a 19" (shadowmask) and 21" (Trinitron) CRT monitors, a 19" CRT TV, a 5" CRT TV, and a 3" oscope left with CRTs. That's not including the 0.5" CRT in this borked Hi-8 video camera I have (I acquired it broken...)

                              Comment

                              • momaka
                                master hoarder
                                • May 2008
                                • 12170
                                • Bulgaria

                                #16
                                Re: How Many Screens Have You "Accidentally Cracked" ?

                                Originally posted by eccerr0r
                                That's not including the 0.5" CRT
                                Half inch? LOL! That is so tiny.
                                I am guessing that is for the viewfinder?

                                Comment

                                • eccerr0r
                                  Solder Sloth
                                  • Nov 2012
                                  • 8698
                                  • USA

                                  #17
                                  Re: How Many Screens Have You "Accidentally Cracked" ?

                                  Yes, the viewfinder is a half or 3/4" CRT in there... Not so funny after you find out they're real... The "eyepiece" has a lens on it to magnify the screen too

                                  It unfortunately is a black and white tube, but what can you ask for when the the screen is that small.

                                  The aspect ratio (screen size vs length) you can guess is pretty bad, just to make sure linearity is good with simple electronics... The tube is about 3 inches long with the about half inch face.

                                  Another thing I was wondering, what voltage is needed for these tiny CRTs? I'd guess that maybe 3KV is enough to get the cathode ray going for a tube this small. With the voltage this low I'd imagine that generating x rays is kind of hard...
                                  Last edited by eccerr0r; 12-26-2015, 04:53 PM. Reason: a new question

                                  Comment

                                  • stj
                                    Great Sage 齊天大聖
                                    • Dec 2009
                                    • 30990
                                    • Albion

                                    #18
                                    Re: How Many Screens Have You "Accidentally Cracked" ?

                                    if you play with one, the power to the HV circuit is usually 9v

                                    Comment

                                    • eccerr0r
                                      Solder Sloth
                                      • Nov 2012
                                      • 8698
                                      • USA

                                      #19
                                      Re: How Many Screens Have You "Accidentally Cracked" ?

                                      Yeah I see the tiny "flyback" (but I'm not sure if it's "really" a flyback vs a discrete switching PSU)... The voltage in probably is working as the CRT is lighting up just fine (screen starts up with random lines as if the cathode control is messed up along with the sweep circuitry, and then after warming up a bit the screen is all white.)

                                      This circuit was made in 1995 or so. Sounds like it very well could be in the danger zone...

                                      Alas still trying to figure out how to get the PCB out of the case. The CRT is loose when the case is open but the PCB is either glued or I can't find where it's being attached...

                                      Comment

                                      • TechGeek
                                        Computer Geek
                                        • Jan 2015
                                        • 2254
                                        • USA

                                        #20
                                        Re: How Many Screens Have You "Accidentally Cracked" ?

                                        Originally posted by stj
                                        if you play with one, the power to the HV circuit is usually 9v
                                        9kV or 9VDC?
                                        Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.

                                        My computer doubles as a space heater.

                                        Permanently Retired Systems:
                                        RIP Advantech UNO-3072LA (2008-2021) - Decommissioned and taken out of service permanently due to lack of software support for it. Not very likely to ever be recommissioned again.
                                        Asus Q550LF (Old main laptop, 2014-2022) - Decommissioned and stripped due to a myriad of problems, the main battery bloating being the final nail in the coffin.


                                        Kooky and Kool Systems
                                        - 1996 Power Macintosh 7200/120 + PC Compatibility Card - Under Restoration
                                        - 1993 Gateway 2000 80486DX/50 - Fully Operational/WIP
                                        - 2004 Athlon 64 Retro Gaming System - Indefinitely Parked
                                        - Main Workstation - Fully operational!

                                        sigpic

                                        Comment

                                        Related Topics

                                        Collapse

                                        • diamon
                                          Issues with new Surface Pro 5 screens
                                          by diamon
                                          I have three Microsoft Surface Pro 5 model 1796, with all cracked screens.
                                          Have bought from Aliexpress three new screens, the part numbers from my and the seller are the same:

                                          Bad working China screen part number:


                                          Good working own screen part number


                                          Error I get with the bad working China screen:


                                          No error with the good working own screen:



                                          All the three China screens (all the same exact part numbers) produce the same error in Device manager. Have also performed a clean installation...
                                          06-25-2023, 01:41 PM
                                        • gsmtim
                                          Lenovo X1 Yoga Gen5 Accidentally MEC1663 FW Erase Can't Boot
                                          by gsmtim
                                          Hi guy's anyOne Have full backup for Lenovo X1 Yoga Gen5 MEC1663 because i accidentally Erase the main FW and EEPRom. i only have backup the Main FW , but i try to Rewrite the 256MB and 288MB but the machine Can't boot, only Charging Indicator and 3blink to power button

                                          Model # : Lenovo ThinkPad X1 Yoga Gen 5
                                          Board # : GX4A0/GYG50 NM-C881 REV 1.0
                                          Serial # : PF-2W2P5H
                                          Type # :20UC-S1L21H
                                          06-05-2025, 07:22 AM
                                        • Ady2017
                                          Does anyone know about 16x2 LCD screens used in alarm keypads?
                                          by Ady2017
                                          I have got an old Gardtec GT595 alarm which has got a faulty keypad with a failed LCD screen. This was apparently a very common problem with these and many people have had to replace the whole alarm because of this problem. Somebody claims to be able to repair the keypads by replacing the screen and I have tried it myself by replacing the LCD with a commonly available HD44780 1602 16x2 Serial LCD screen but it is not working. I am sure it is a problem with a driver or simular which is not allowing the screen to talk to the rest of the electronics. Does anyone know what this original screen was...
                                          06-02-2025, 04:56 PM
                                        • Storyteller12
                                          Is this screen cracked?
                                          by Storyteller12
                                          I've never seen a screen cracked like this and still have a perfect picture.

                                          Maybe it's the diffuser cracked like on some of the Samsung NU series.

                                          Just curious what you guys think. TV is for sale in my area and thinking of maybe trying my luck.

                                          Wanted some other opinions before I pull the trigger...
                                          04-07-2023, 08:44 PM
                                        • Dan20701
                                          Dell Latitude 5420, Coloured screens from one colour to another continuous.
                                          by Dan20701
                                          Hello all, I have a Dell Latitude 5420, before I upload the bios I thought I would ask. All I am getting is are coloured screens from one colure to another continuous that's all its doing.
                                          I have searched on google some say this is a graphics problem and not a bios problem. I did try another bios file from the forum it stops at the Dell logo.
                                          With the original chip fitted I am getting error code 3 amber and 3 white flashes.

                                          Any advice please ?.​
                                          09-02-2024, 03:43 AM
                                        • Loading...
                                        • No more items.
                                        Working...