1978 H. H. Scott Stereo Receiver Left Channel

[vortalexfan]

Hello everyone, I am currently working on a H. H. Scott Stereo Receiver Model 335R for someone and the symptom its having is that the left channel is noisy (popping and crackling noises) and I have worked on stereos with that issue before and repaired them, and the issue is usually with a noisy transistor in the pre-amp stage of the amplifier section (there was another name for it but I can't remember the name of it right now) and most of the receivers I've worked on before this one were pretty straight forward as to where the various transistors for each stage of the amplifier section were located but this one is a little more difficult to figure out where each stage of the amplifier section of the receiver would be located and their respective transistors.

I have downloaded the service manual for this receiver but I can't get the schematics to blow up to full screen on my laptop (Adobe Reader) and I need to view those schematics so I can find those noisy transistors.

Adobe Reader used to have a full-screen mode but that feature seems to be absent now (as I can't seem to find it anymore) and that could of been how I could of viewed the schematics easier but since there doesn't seem to be a full screen mode anymore I can't really read the schematics without having to read them inch by inch which doing it that way I can't see the full context of each circuit when the schematics are blown up to 100% just to read them, I was thinking of trying to print them off but I remembered that my printer will only print the schematics at their original 50% scale which is very hard for me to read.

Anyone have any suggestions on how I can go about making this repair using the schematics I downloaded keeping the aforementioned issues in mind?