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Service AI specializes in providing accessories and spare parts for laboratory instrumentation in a niche area of the market. Our business strategy focuses on meeting the unique needs and requirements of popular equipment that is widely used but no longer manufactured or supported by its original manufacturers.   With over 25 years of experience in supporting scientists with laboratory instrumentation and spare parts, our knowledgeable and dedicated team takes pride in ensuring that every recertified or new instrument and spare part we supply is fully tested and certified by a manufacturer-trained engineer. We guarantee that our products will work and provide proof of performance documentation when applicable.  

We only supply refurbished laboratory instrumentation that our team of experts are trained and certified to work on, ensuring that we deliver high-quality instruments and reliable service to our customers.

At Service AI, we understand the importance of safe shipping and delivery, and we take utmost care in ensuring that our products are delivered safely to our clients. Additionally, we offer professional installation services upon request.

LS 6500 displays H# abort with 'count rate too low' message.

Beckman LS Guide

LS 6500 displays H# abort with 'count rate too low' message.

Service AI

The cause of H# value failure on the Beckman LS6500 may be due to a problem with the front end electronics, including the PMTs, pre-amp housing assembly, or high voltage power supply. However, it could also be due to a problem with the Cs137 source drive itself. To isolate the issue and confirm if the front end electronics is functioning correctly, perform a simple CPM count to check for valid sample counts. If it fails, the likely cause is a faulty pre-amp board in the pre-amp housing, specifically the board on the left-hand side near the cooling fan.

If the front end electronics are confirmed to be working correctly and the problem persists, check the mechanical movement of the source spring responsible for moving the radioactive source from the pea to the pig to ensure it is moving smoothly and not slipping. If the problem continues, it is recommended to seek the assistance of a trained expert for further investigation.

Email us at support@serviceai.us, or call us at our technical support line at +1-510-899-1340 for more information.

tags Beckman Coulter LS6500, Beckman LS6500, LS6500 READY! Wyse Winterm Module
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