philips pm3265e scope

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wilros

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need help to repair! one channel is not working well, could calibrate it but some of the amplifier stands are distorted and to low in voltage (.2V, .1V and 50mV).not able to find the error. any suggestions?
 

i have the service manual, and i used it to calibrate. this gives me no good point to find the solution. it is not the relais (multiple) on the attenuator, but i think it is on the mainboard, because just some of the attenuator steps are not working well.
 

I, can you send to me , or upload the service manual?
i need to fix my scope, and this one will be very usefull.

Thanks
 

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