No further work directly on the game. My basement workshop flooded a couple of weeks back and most of my free time goes to calculating how much new flooring to buy and to cleaning and reorganizing the space before I install it in another week or so. It needs done but its a frustrating distraction.
I did receive the TDA-1004A chips and I now suspect that the CB chips are/were in fact the 'A' version. I have a supply of the heat sinks and I picked up some silicon conductive pads I thought I'd try out. Current plan is to finish the basement, focus on my Drag Race cabinet and hardware work, then repair the CB and DR boards at the same time. The audio section is similar in both.
However, my supply of heat sinks is from donor boards where the audio section is either literally burned or shows signs of the TDA-1004 chips having been replaced. The problem is so common I'm extremely hesitant to just patch it back up. The image below is not my board but its not atypical. Id like to be able to leave the machine running for a couple of hours without fearing it'll catch on fire.

I was thinking of asking for community brain power in sourceing a better heat sink, something like this maybe . I also tested out the TDA-2030 based two-channel amplifier I posted a picture of above and it works well. These run off ~ 12V and do 15 watts per channel. I need to document how many amps they pull on 4, 5 and 8 inch speakers but its very, very low. The form factor would work well for mounting and inserting into the circuit on boards of this design.
The CB will get fixed with the 1004A chips but for future restores, including the DR probably, Im going to be testing this out. The issue needs a better solution than the orginal design I think.
I did receive the TDA-1004A chips and I now suspect that the CB chips are/were in fact the 'A' version. I have a supply of the heat sinks and I picked up some silicon conductive pads I thought I'd try out. Current plan is to finish the basement, focus on my Drag Race cabinet and hardware work, then repair the CB and DR boards at the same time. The audio section is similar in both.
However, my supply of heat sinks is from donor boards where the audio section is either literally burned or shows signs of the TDA-1004 chips having been replaced. The problem is so common I'm extremely hesitant to just patch it back up. The image below is not my board but its not atypical. Id like to be able to leave the machine running for a couple of hours without fearing it'll catch on fire.

I was thinking of asking for community brain power in sourceing a better heat sink, something like this maybe . I also tested out the TDA-2030 based two-channel amplifier I posted a picture of above and it works well. These run off ~ 12V and do 15 watts per channel. I need to document how many amps they pull on 4, 5 and 8 inch speakers but its very, very low. The form factor would work well for mounting and inserting into the circuit on boards of this design.
The CB will get fixed with the 1004A chips but for future restores, including the DR probably, Im going to be testing this out. The issue needs a better solution than the orginal design I think.








