I'm trying to draw the PCB with the help of "jujub" photos. If this device is stillMcRuff wrote:Just joined this site after seeing posts for S Hawk Ltd II tonal expander. Although I have a great photo component side, tracking down a photo of the solder/trace side has proven tough since there is a foam rectangle covering most of the board so battery cases do not come in contact with it. Does anyone have a clear complete shot of the solder side of the board?
I've owned S Hawk Ltd devices in the past (Hawk I) my first being purchased new (yes, I'm a dinosaur). The second being purchased years later on eBay. I successfully traced that board and built a clone in a more player friendly enclosure.
btw - any idea of the chip used in the II. The 'I' version used a common 741 op amp. I'm thinking that due to voltage requirements the II uses a 4131, but can't make out for sure.
in your property or at least good photos would be of benefit. Specifically on the photos I do not see the value of the capacitors and the inductances would have to measure. In fact I've already made the SMD version of this unit that would fit in the 1590B housing.