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The display on our Polder thermometer loses most of its crystals. I thought I could open it up and just wipe its “zebra” contacts, but they seem to be taped over and not subject to contamination. Plus, the crystals respond if I press on the sandwiched glass sheets. Do I try separating the sheets to inspect contact points, or is this repair not worth attempting?
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Rep: 91
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In general, the LCD display of a Polder thermometer can't be repaired once it's broken. If the LCD display is damaged or not functioning properly, it will need to be replaced with a new one.
Fortunately, many Polder thermometers have replaceable probes, which means that you may only need to replace the probe, rather than the entire thermometer. However, if the issue is with the display itself, then it will need to be replaced.
If the thermometer is still under warranty, you may be able to get a replacement from the manufacturer. You can check the warranty information that came with the thermometer or contact the manufacturer directly to inquire about the warranty coverage.
If the thermometer is not under warranty, you can try contacting a local electronics repair shop to see if they can replace the display for you. However, keep in mind that the cost of the repair may not be worth it, especially if the thermometer is an older model or if the cost of the repair is close to the cost of a new thermometer.
Overall, if the LCD display of a Polder thermometer is broken or not functioning properly, it's generally not repairable and will need to be replaced with a new one.
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I don't see this repair as worth attempting. I think you would have a hard time finding a new LCD, and even if you did, you'd have to activate the adhesive using a soldering iron, which is a long and tedious process.
par Andrew S