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I have a workstation HP Z1 all-in-one with the backlight working partially, in the overall is good but on the left is dimmer. I found online the option to replace the screen but the exact model is impossible to find without moving with hp spare part which is extremely expensive, considering I have taken a refurnished model. The screen is LG lm270wq1 (SD) (BD) and I found a lot of different end code (A1) (B1) (E3), so I want be sure to find the best and cheap way to restore the backlight, are those model compatible? Is there a website where I can buy just the backlight? Attached 2 pics with the faulty and the serial
Thank you all in advance for the support
@gabe981 if you are saying that the once you found are LG lm270wq1 (SD) (A1) LG lm270wq1 (SD) (B1) LG lm270wq1 (SD) (E3) then the only way to determine compatibility is by downloading the datasheet. Armed with that information you can at least check the connections and connector compatibility. It is possible that some of those screens would work. Backlight LED strips are available so check places like this
search any display the last two letters do not matter, keep the cables from the display with problems you will need as well as the electronic board with the vga connector the ones on the older poppy can work without any problem provided the plate is replaced translated by goole
Hi to All that have the same problem. In most cases problem is that LED stripes are unsoldered from connectors. Carefully disassemble the screen and 2 Stripes are at the bottom of the screen. Be really careful when you try to disconnect cables from LED stripes and later take stripes to mobile phone service or try to do it your self, but they have a microscope with small iron blade soldiers and can connect them properly. This will restore your LED stripes to working conditions in 90% of cases. But for the future, buy some new LED stripes from AliExpress and replace them. I have 2 screens and on both, I needed to solder LED after some time. And they are still working. Just be very careful when you disassemble the screen and record which part goes where. Make photos to record procedures. Best regards Sasha
Hello, I have a similar problem but I’m not sure about the reason for my non-working display: The display port still works but recently the display itself finally faded out (although it had a temporary comeback in between).
There were some warning signs before, e.g. less brightness in one corner and in general, shortly before breaking. A few times also screen artifacts appeared: The whole display turned dark brownish as if there were a fluid which spread over the display from top to bottom. Anyway, after a restart this wasn’t the case anymore. So, can anyone give me advice about what to test now systematically ? I didn’t find a plan of the LCD Sync/backlight port pins to measure the voltage. Regards, macpac
Thank’s for asking, and have great expectation from me. Unfortunately, I’m the only user of 2 Hp Z1 and I had a problem the screen suddenly become darker on one side. After I buy a new one a few years ago on eBay and replaced it, after 2-3 years the same thing happens. I did not throw away the old one and decide to make one working from two that I had. We changed the good one to be in one panel and we have seen that on Bad some wires are disconnected. My friend takes them to Mobilephone repair shop and they properly solder them. Last year I both another HP Z1 for pennies since the screen did not work! And I have replaced the panel with a fixed one, and Miracles appear. The screen is working perfectly and it still works. In the meantime, I have found on Aliexpress that I can buy new LED stripes and don’t need to solder them. My suggestion is to clean all connections on your screen. Try first with a vacuum cleaner, Use also gentile brush like one from your girlfriend for makeup or compresed air but not strong blow. This will remove dust that maybe is the reason for your problem. In most cases, people don’t clean PC ever. If this doesn’t help use Contact spray and watch that is not draining all ower screen. Use paper tissue on the opposite side to pick up liquid. Live overnight to evaporate and then plug the screen to the power and turn it on. Be sure that you do this when the screen is UNPlague from power and PC. Always live for few hours to discharge and then do the cleaning procedure. If this not help then something else is the problem and you might need to change the display. Hope this will help, and do this when you decide that your screen has “no pulse” and you consider that need reanimation. Hope this will help!
Thanks for your quick answer, Sasa! The inner side of the PC is rather clean from dust, so I don’t think that this is the problem. Before disassembling the display I would rather check whether the panel components work as they should but I have no specifications - do you? The problem is that the PC is not usable with an external display after the internal display is deconnected, at least it doesn’t boot anymore. That’s all I know. But I still need to have access to it from time to time. That’s why I won’t disassemble it before it is inevitable.
Hi Gabriele, unfortunately, this is what I know about HP Z1 and the story ends at this point. Sorry, I can’t help more than this. I hope you will find a solution for your PC. Best Regards Sasha
