- LCD has ghosting segments problem (in Pioneer KEXM8076ZT, P1708) - 2 Updates
- Help for hard repair attempt - 2 Updates
| Adam <adam@no_thanks.com>: Jun 13 08:32PM I have a Pioneer KEXM8076ZT, P1708 (Mobile Electronics: Radio/Cassette Player) with a bad LCD (ghosting segments). I found a couple of relevant parts... 1) Pioneer CWM4931 - LCD with PCB 2) Pioneer CAW1385 - LCD only Even better, someone posted a YT video fixing LCD ghosting segments just by cleaning the contacts on his Fluke 85 Multimeter... How to bring LCD Ghost Segments back from the Dead... https://www.youtube.com/watch?v=MTulo_SIE6E Not sure whether I can clean the contacts on my Pioneer radio. Anyone know what type of connector is used for the LCD and PCB ? Is the connector standard or proprietary ? I have photos but not sure how best to upload. Thanks in advance for any help. |
| jurb6006@gmail.com: Jun 13 05:11PM -0700 There is no uploading here, you have to have some image hosting. there are a bunch of free ones, and I know none of them are perfect, that's why I don't have one. I used to have Dropbox but when they told me I had to update my OS I told them to go pound salt. Most of those LCDs are connected by a zebra strip. It is not supposed to ever go bad. I would see about a replacement before even taking it apart. I would like to assume that if you order the LCD with the PCB you get one but never assume anything. Zebra strips are only partly standardized, and to cut them you need extreme accuracy. You might want to see if you could maybe squeeze the whole mess together, might work might not. |
| Jeroni Paul <JERONI.PAUL@terra.es>: Jun 13 11:48AM -0700 Eremita Analogico wrote: > the various supply lines do not have ripples. When I got time, I will > try again to verify supplies. > The tooths are stationary over the waveform. These tooths look pretty clean and perfect to come from a failing capacitor. If this scope has a probe calibration signal or output maybe some signal is leaking into the input. Or some other source is leaking in the signal path. Some hints can be obtained observing how it changes with amplitude adjustments and scan timings. I would start scoping the input with nothing connected to it to check if that square signal is there and if possible trace thst input through its stages. |
| Terry Schwartz <tschw10117@aol.com>: Jun 13 12:27PM -0700 Check the scope input coupling, also the probe. Looks like input coupling might be set to AC. |
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