Gordoham Posted November 6, 2022 Report Share Posted November 6, 2022 😡 Can Somebody help shed some light! This D4S JP6300 went into production mode. And hasn't worked since. It powers up normally fans and all. Just no sound to subs Quote Link to comment Share on other sites More sharing options...
Kyblack76 Posted November 6, 2022 Report Share Posted November 6, 2022 Is the protect light on ? Start here. Turn the key off, un-power the amplifer. Remove the load (un-plug the speaker wires) and turn the key back on/power up the amp. While your there, and if you have a meter, check all pos, and neg/ground connections. If the fan comes on and power light is lit, seems those are fine, but...... Do the mentioned and report back. Quote SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
02Blazer Posted November 7, 2022 Report Share Posted November 7, 2022 (edited) 20 hours ago, Gordoham said: 😡 Can Somebody help shed some light! This D4S JP6300 went into production mode. And hasn't worked since. It powers up normally fans and all. Just no sound to subs are those some solar batteries you got in that wood case with the down4sound stickers  ???? might not be getting enough current tp that amp if they are solar batteries ... Edited November 7, 2022 by 02Blazer Quote Link to comment Share on other sites More sharing options...
02Blazer Posted November 8, 2022 Report Share Posted November 8, 2022 looked those batteries up and they are in fact solar , rv, lawn mower batteries. they have a built in BMS in them that limit discharge to 100 amps output , that's why you don't see anyone use a BMS in lithium car audio battery builds . my suggestion is to get rid of those batteries and get an actual purpose built lithium bank that can support that amp and other amps you are running . you will need to have a bank (lithium ) to support at least 700 amps for that amp and whatever other amps you are running , i suggest a 96ah Headway bank ..  Quote Link to comment Share on other sites More sharing options...
bialeks Posted April 5, 2023 Report Share Posted April 5, 2023 i had a jp63 with similar problem my amp never went into protect but my bass knobs clip light would stay on. amp wouldnt produce any sound. i believe its the bluetooth card for the bass knob. i sent it in to a tech and he said it couldnt be repaired because the card isnt available. i couldnt get a response from down4sound either Quote Link to comment Share on other sites More sharing options...
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