The catch is Channel 2 is deranged. It looks to me like the preamp board (but what do I know). No amplification, no vertical positioning.
Channels 1 and 3 work fine.
I bought this some time ago before I found my Kenwood. figured I could use channel 1 to find the problem on channel 2. I got as far as getting the schematics and calibration manual from BK. But then I found working analog to keep. So I lost interest in this.
PM me. Remember, we are all subsidizing Amazon when it comes to shipping. My guess right now is between $25 and $50 CONUS.
![SOLD: (US/Canada/Mexico) BK 2190 100Mhz w Time delay Scope for shipping cost 2238814-0](https://www.eevblog.com/forum/index.php?action=dlattach;topic=429664.0;attach=2238817;image)