This signal was discontinued by Intelight about 8 years ago. In fact Intelight themselves were absorbed into a new company called Q-Free. There used to be two of these by Motor City Casino but both were pulled out of service and replaced with louvered Durasigs
Yes heat sinks on them. They were removed because the boards inside were damaged and replacement parts are no longer being made. These signals were easily damaged by water getting inside and shorting the circuit boards out.
Intelight is now Q-Free America and they do not support the signal in any way. Parts and light arrays are out there but you gotta be in the right place at the right time
I assume you mean why did some get retrofitted with Dialight LED modules? These nature of these signals with exposed circuit boards meant they had to be 100% sealed against water intrusion. Over time, with poor installation, and with more crude quality in the later units made with Chinese parts, water eventually would get in and wreak havoc on the boards. The later units had less conformal coating on the boards which did not help moisture. When Q-Free bought Intelight they did not desire to continue production on these.
Pretty durable. They are heavy thick glass filled poly. They weigh quite a bit more than a regular poly head. More like an aluminum head in weight. As long as they are sealed good to prevent water damage to the electronics inside
