Here's a pic of the Star Wars B-Wing erm, I mean the TDA-1004 heat sinks. Big suckers!TDA-1004A chips are available in small lots on Ebay but it appears to be a slightly different chip than the TDA-1004 based on the diagram below, which is the only information I've found. I've spent exactly zero brain cycles determining if they're interchangeable on this board and I'm not even sure the chips on there aren't 1004A's since the image below suggests the 1004A expected a heatsink.
View attachment 755049
In the mean time these things tend to blow up in use which is the best reason I can think of for NOT using them in the restore.
Options I'm considering are:
- Replace with donor chips and mount heatsinks larger than the OEM (preferred)
- Replace the audio section with a modern, PCB-mounted equivalent wired onto the DR PCB
- Replace the audio section with a stand-alone amp inside the cab but external to the PCB
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