This head here is one of the best heads ever made in the bass world. The only thing worth mentioning is the infamous blue light (reason for the low price). Agedhorse here on talkbass.com does these repairs. Everything works perfectly on this head and cosmetically it is a 8/10 with its fair share of topical scratches. This head will ship with power cord by way of 2 day priority mail. I am not interested in any trades and I accept PayPal.
The blue lights are low voltage LEDs designed to give a cosmetic glow to the tubes. AFAIK Genz Benz got a bad batch of LEDs that fail. If you want the glow, it's a matter of replacing the LEDs. The unit cost for one LED is probably less than a quarter, and I think the amp has three. Genz Benz Streamliner 900 LED repair guide...