My Welch Allyn 11710 Ophthalmoscope will not light ... | 合法醫療器材資訊網

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If your Welch Allyn ophthalmoscope will not light up, you may try the following steps to determine the cause:

• First, try another instrument head on the power source. If that instrument head lights up, then the lamp may need to be changed in the ophthalmoscope head. See How to change lamp[1] • If the secondary head also will not light up, then the problem may be within your power source or handle.

• If using a rechargeable handle, check the date on the rechargeable battery. The battery may need to be replaced. 

• Check to ensure that the correct Welch Allyn battery is being used with the correct model power handle.

• Check the part number between the prongs where the handle plugs in: o 71050 part number should have 72200 battery o 71050-C part number should have 72300 battery o 70750 part n...