# Replacement Parts Sought for 5 yr old PA-II Classic

**URL:** <https://community.purpleair.com/t/replacement-parts-sought-for-5-yr-old-pa-ii-classic/22855>\
**Category:** Troubleshooting\
**Created:** [July 31, 2026, 7:22pm UTC](https://community.purpleair.com/t/replacement-parts-sought-for-5-yr-old-pa-ii-classic/22855 "2026-07-31T19:22:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mike\_Cullen](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/mike_cullen/32/11259_2.png) [@Mike\_Cullen](https://community.purpleair.com/u/Mike_Cullen)\
**Post date:** [July 31, 2026, 7:22pm UTC](https://community.purpleair.com/t/replacement-parts-sought-for-5-yr-old-pa-ii-classic/22855/1 "2026-07-31T19:22:40Z")

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Our venerable PA-II unit has died in our coastal zone, but I’d like to try to give it a second life, if possible.

Symptoms:

- Red LED on; 3.3 v present on control board; board looks clean
- no WiFi present
- one fan spinning - other spins 0.5 rotation, then stops
- no serial port connection when using Utility … I added the drivers … PC not detecting the PA-II port

The MAC address is : xx:xx:xx:xx:xx:xx + Order: PAxxxxx

Would you concur with a likely board & sensor failure?  
If parts available, can you please advise on pricing. Thanks!

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**Author:** ![ShawnBoyle](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/shawnboyle/32/6816_2.png) [@ShawnBoyle](https://community.purpleair.com/u/ShawnBoyle)\
**Post date:** [August 3, 2026, 10:06pm UTC](https://community.purpleair.com/t/replacement-parts-sought-for-5-yr-old-pa-ii-classic/22855/5 "2026-08-03T22:06:32Z")

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Hi Mike,

Thanks for letting us know! Just for clarity, I omitted the device ID and order number you provided in your post since this is a public forum.

I’ve pulled up your sensor, and I do see that it’s currently offline as well. If you’re not seeing a serial port connection from the device in the Utility, I’d suggest ensuring that you have a USB cable capable of data transfer, as opposed to just charging, especially if there’s a red LED indicating power.

If checking the cable and drivers has been unsuccessful, and that red LED is consistently stable, we could take a look at the sensor or provide a quote on replacement parts.

Please reach out to us at [contact@purpleair.com](mailto:contact@purpleair.com) referencing this community post, and we’ll share some information to get things moving for you. Thank you!