Bratwurst
Rugal's Thug
- Joined
- Aug 14, 2016
- Posts
- 92
Serial #020213, sticker underside says use Pro Pow only.
Pic of the board: https://i.imgur.com/IWA8dvA.jpg
System was given to a friend as-is years ago, and they have given it to me in an attempt to fix it. I presume it was fed the wrong power supply at some point. I'm hoping to get it working to give to another friend.
Hooking up composite cable to Samsung LCD and a Sony 8" PVM, both black screen on power up with no game. Power supplied from bench top variable supply dialed to 5 volt but it never pulls more than 1.15-1.2 amps. Q2 PNP transistor B1135 positioned right after the switch is reading ok via diode checker. Voltage reading 4.75 volt immediately after D1 zener diode...
Don't have a game on hand to test with, but will get one soon. I figured even without a game I'd get a color screen like blue, etc.
Didn't see any damaged traces but I will give it a harder look again.
Ran console with power for two minutes, measuring temperature with IR thermometer on all ICs. LS86 & LS05 next to the bios chip were getting warm up to 89F while everything else stayed 70F-72F (just a few degrees above room temperature.)
Pic of the board: https://i.imgur.com/IWA8dvA.jpg
System was given to a friend as-is years ago, and they have given it to me in an attempt to fix it. I presume it was fed the wrong power supply at some point. I'm hoping to get it working to give to another friend.
Hooking up composite cable to Samsung LCD and a Sony 8" PVM, both black screen on power up with no game. Power supplied from bench top variable supply dialed to 5 volt but it never pulls more than 1.15-1.2 amps. Q2 PNP transistor B1135 positioned right after the switch is reading ok via diode checker. Voltage reading 4.75 volt immediately after D1 zener diode...
Don't have a game on hand to test with, but will get one soon. I figured even without a game I'd get a color screen like blue, etc.
Didn't see any damaged traces but I will give it a harder look again.
Ran console with power for two minutes, measuring temperature with IR thermometer on all ICs. LS86 & LS05 next to the bios chip were getting warm up to 89F while everything else stayed 70F-72F (just a few degrees above room temperature.)