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Introduction |
| We have about 25 of these soldering stations in my workplace, but after 5 or 6 years of use, their display backlight started to fail. Without backlight, the display is almost illegible. Since 4 stations have developed this problem so far, I've decided to investigate. | | At the time Ersa didn’t offer standalone replacement displays; they forced you to buy a new control board costing a whopping 160 EUR, which is almost half the price of a new soldering station. Nowadays it is possible to buy replacement displays under the catalog number 3EBLCD128x64 for 33 EUR, though at the time the only option I could find was [link|httphttps://www.orientlcdorientdisplay.com/AMG12864PR_G_B12WTDW_2_9_128x64_COG_LCD_Module_pproducts/amg12864pr-g-b12wtdw.htm-2-9-128x64-cog-lcd-module/|this American e-shop], but shipping costs to Europe start around 100 USD. That's better, but still not exactly cost-effective (50 USD displays, 100 USD shipping). The displays are probably manufactured somewhere in China, but I couldn't identify their original manufacturer, nor I was able to find another source (Ebay, Alibaba...) for them. If someone finds them, please let me know in the comments. Here are markings that are on the back of the display: | | | PRE-WU2495B-01 | | | ED-5455-LED/A ROHS | | | 0712FJB*1094/0107/1*6 | | | Anyway, since I couldn't get new displays for reasonable price, I decided to replace burned backlight LEDs in the displays. I used LTW-108DCG-HS10 as replacement LEDs in this guide, but any miniature white LEDs with at least 1000 mcd luminous intensity should do. See step 14 for more information. |
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