I use mine all time, They are far more useful in determining not only signals but the quality and trigger points than a just a probe.

@ zarco...As an engineer I would be surprised you wouldn't recommend a scope to everyone who was even remotely curious as to fixing things of an electrical nature, whether or not they know how to use it thats how you learn, A 25mhz analog for example can be had off E/pay can be had usually around 50.00... Fixing game boards is a different animal so to speak,, And this princess usually resorts to a Fluke 9010a, not a cheap machine (or even a scope for that matter) but rather a micro system troubleshooter that actually has the capability of looping signal triggers, and creating some seriously custom programs, Without removing the Roms...Just saying.

After much thought, I guess Jenn can see why some may consider scopes not necessary equipment ...Pinball is sposed to be fun, Not some self inflected torture of sleepless nights, and high dollar equipment...I have to change my answer here, I only have a dozen pins or so, and in reality rarely use a scope on them, Although I do use it alot on the arcade machines and jukes.

I have taken some voltage a time or three, But usually gets worse after painting, hard life I guess, ...Sometimes I just talk to myself in the night.