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AA501A distortion analizer Problem

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fc911c
Posts: 1
Joined: May 24th, 2011, 5:39 am

AA501A distortion analizer Problem

Post by fc911c » May 24th, 2011, 5:49 am

I recently aquired An AA501A with two Sg505 WR Wq sinal gens. The aa501a R3063 1.2R CC resistor on main board was burnt and the two bulds on the main board are brightly lit. Can some one tell me what might be causing this? I pulled out U4041 (MC1458P1) and light are still lit.

Thanks
Frank

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