| Arcade Collecting > Restorations & repair |
| Macross PCB No Audio & CMOS Error ***Error Solved*** |
| << < (4/7) > >> |
| Falken Hawke:
LOL, I'm going to step away from this for a bit. Obviously I'm tired and stuff... I figured I have an audio amp board I just put together for another project so I could hook it up in place of the amp chip. After doing all that, still no audio. I was bummed as that would've been a simple fix but then I looked closely at my audio board... Where are the heat sinks? Wait, where are the amps?! Frack, I didn't install them yet! 🤣 |
| Falken Hawke:
So finally able to take a look at things again and decided to take a look at the LA4460 data sheet again and noticed there were pin voltages stated... talk about overlooking things... Anyway, whole lotta wrong out of it. Verfied readings with Time Soldiers just to be extra certain. Now I have someplace to begin with on the audio side. Hopefully there isn't anything else further down the line. |
| Falken Hawke:
Well, blind replaced the audio amp and no luck. Still didn't check the pin values 'cause disappointed... Maybe start again tomorrow... |
| yotsuya:
Bummer, man. That’s all I had to do for mine, but I didn’t have any graphical issues. Here’s hoping you can get it tracked down! Sent from my iPhone using Tapatalk |
| Falken Hawke:
Found a little more help on the audio side in the form of the schematic for "Ghosts & Goblins" which uses the YM2203 & YM3014 chips for audio. The op-amp and amp chips are different but functions are similar. Driving on... |
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