Husqvarna T540xp control unit issues

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Saw Fixr

ArboristSite Operative
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Good Day,
Does anyone here work on these electrics? I Have the above saw that I determined the control unit was bad. Verified this by using a known good control unit from another saw…
Received the new part(6 month wait time), installed it, and the control panel just flashes until battery is removed. Supposed to be plug and play, but wondering if the part (all electronic)needs programming?
Might just have a defective mfgrs part, which I’m trying to determine.

Thanks
 
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