I have a Harmony LA 300 that stopped working. Power supply up top was good. Gave me 24 volts in the head where it attached to the circuit board. Was only getting 3 volts at the lamp and at the pins for the on/off/ontensity switch. Indicator lamp D7 on the board was blinking. Unit eventually began to work on its own, seems fine now. Light stopped blinking. Any ideas besides gremlins?
Fri Dec 26 2014
Troubleshoot board problem
Fri Jan 02 2015Reply from Kara Crissman
Dear Masterspark,
We came across your post about the Harmony LA300 Examination Lighting System. We have a dedicated Service Support team who can help. Please provide us with your preferred method of contact or call 1-800-333-8828 for assistance.
Thank you,
Kara Daugherty
Online Marketing Coordinator
STERIS Corporation
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Tue Jan 06 2015Reply from mike.biomed
Tue Jun 23 2020Reply from Ray Brown, CBET
Hmmm... nothing in the technical service guide about a blinking LED. Did you get a Lamp Ignition Fault error? It chops the power going to the lamp, especially on startup. It varies the duty cycle for the brightness. Might want to get the manual (on the left) and read it. Not terribly illuminating, pun intended, but it'll give you some insight. My SWAG otherwise would be a MOSFET connection on the board giving way due to reflowing solder. Your mileage will surely vary. :-)
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Sun Jun 28 2020Reply from RangerJones
The lamp-out LED on the lighthead flashes ON for one second, then OFF for one second, then repeats. The lamp-out indicator on the screen flashes and the fault contains the message: REPLACE "A" (or "B") LAMP ON LIGHTHEAD: X
Action: Replace the lamp (A or B). or
The wiring inside the lighthead is loose. Inspect all wires leading to and from the lamp change assembly. (Gently tighten banana jacks.)
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