sven6977 Posted June 5, 2010 Report Share Posted June 5, 2010 I apologize for this being a rant, but I have been doing an install in my car. I built a t-line and have no more trunk room so I had to move my amps to under my driver and passenger seats. As I'm testing my amps out to make sure they have good grounds, no broken connections or anything I notice that I didn't plug in my rcas on my new US amps 4channel. So I plug them in while the head unit is on... little did I know is that this is a huge "no-no" for Pioneer head units because in the circuitry they have something called a "Pico" (peco?) fuse that if you plug or unplug an rca while the unit is on it blows and then tries to ground the head-unit through your rcas (FML). When this stupid fuse blows you get a shit ton of engine noise . right now I have a band-aid fix of grounding out the two rcas I'm not using right now with a piece of wire to the chassis of my car and that gets rid of most of it but I will need to use those rcas soon for my new RE comps going in my front doors. Can anyone show me a good way to give my rca's a good ground or describe it? TL;DR Pioneer pico fuse = dumb + engine noise how fix? Rowan University Electrical Engineering LINK TO MY BUILDDDDD Current Setup in my 00' Hyundai Accent: Pioneer DEH-P6900UB RE.6.5C AUDIO 500w 6.5" COMPONENT CAR SPEAKERS Eclipse SE 6500 (6.5 coax in rear deck) two Kicker C124's in a t-line tuned to 28.6Hz Kenwood KAC-7204 US amps 1600.4 V2 Upcoming Build this summer: T-Line enclosure for two C124's tuned to 28ish hz O_O amp my speakers with a US amps 1600.4. Second Skin Should be fun Link to comment Share on other sites More sharing options...
Guest Posted June 5, 2010 Report Share Posted June 5, 2010 im surprised that you know about the pico fuse but you dont know about the "fix". basically what people in your situation do is, they take a piece of speaker wire, take the insulation off, and wrap/snake it around the - shielding of the female rca jacks on the headunit itself, then screw the wire into the headunit chassis (not the little flimsy box shielding that you sometimes use to mount the headunit, the headunit body itself). someone will chime in here with the all famous grounding pic. Link to comment Share on other sites More sharing options...
sven6977 Posted June 5, 2010 Author Report Share Posted June 5, 2010 im surprised that you know about the pico fuse but you dont know about the "fix". basically what people in your situation do is, they take a piece of speaker wire, take the insulation off, and wrap/snake it around the - shielding of the female rca jacks on the headunit itself, then screw the wire into the headunit chassis (not the little flimsy box shielding that you sometimes use to mount the headunit, the headunit body itself). someone will chime in here with the all famous grounding pic. Thank you I just honestly couldn't find the fix. I heard about the fuse from my local shop, I may try to fix the fuse one day if I can figure out its specs (my college has the oven and the solder and stuff for tiny parts). But seriously, just snake wire around the female rcas and screw into chassis? I'll let whoever reads this know how well it works Rowan University Electrical Engineering LINK TO MY BUILDDDDD Current Setup in my 00' Hyundai Accent: Pioneer DEH-P6900UB RE.6.5C AUDIO 500w 6.5" COMPONENT CAR SPEAKERS Eclipse SE 6500 (6.5 coax in rear deck) two Kicker C124's in a t-line tuned to 28.6Hz Kenwood KAC-7204 US amps 1600.4 V2 Upcoming Build this summer: T-Line enclosure for two C124's tuned to 28ish hz O_O amp my speakers with a US amps 1600.4. Second Skin Should be fun Link to comment Share on other sites More sharing options...
Guest Posted June 5, 2010 Report Share Posted June 5, 2010 Thank you I just honestly couldn't find the fix. I heard about the fuse from my local shop, I may try to fix the fuse one day if I can figure out its specs (my college has the oven and the solder and stuff for tiny parts). But seriously, just snake wire around the female rcas and screw into chassis? I'll let whoever reads this know how well it works yea the outside of the rca jack not the inside lol...i saw a video on how to fix that fuse and you basically have to dissasemble the ENTIRE cd player, take out the cd drive unit etc etc. its on the main board itself lol. it was friggin ridiculous. Link to comment Share on other sites More sharing options...
bassHZ Posted June 5, 2010 Report Share Posted June 5, 2010 that same thing happen to me in my Sony head-unit but the rca just blew nothing else i know that sounds weird but i just replaced the rca's with some new ones and problem solved Link to comment Share on other sites More sharing options...
sven6977 Posted June 5, 2010 Author Report Share Posted June 5, 2010 yea the outside of the rca jack not the inside lol...i saw a video on how to fix that fuse and you basically have to dissasemble the ENTIRE cd player, take out the cd drive unit etc etc. its on the main board itself lol. it was friggin ridiculous. that does sound ridiculous Maybe I won't do that, and maybe just get a new HU instead... lol Rowan University Electrical Engineering LINK TO MY BUILDDDDD Current Setup in my 00' Hyundai Accent: Pioneer DEH-P6900UB RE.6.5C AUDIO 500w 6.5" COMPONENT CAR SPEAKERS Eclipse SE 6500 (6.5 coax in rear deck) two Kicker C124's in a t-line tuned to 28.6Hz Kenwood KAC-7204 US amps 1600.4 V2 Upcoming Build this summer: T-Line enclosure for two C124's tuned to 28ish hz O_O amp my speakers with a US amps 1600.4. Second Skin Should be fun Link to comment Share on other sites More sharing options...
sven6977 Posted June 5, 2010 Author Report Share Posted June 5, 2010 that same thing happen to me in my Sony head-unit but the rca just blew nothing else i know that sounds weird but i just replaced the rca's with some new ones and problem solved at least you got it working again live and learn i guess :| Rowan University Electrical Engineering LINK TO MY BUILDDDDD Current Setup in my 00' Hyundai Accent: Pioneer DEH-P6900UB RE.6.5C AUDIO 500w 6.5" COMPONENT CAR SPEAKERS Eclipse SE 6500 (6.5 coax in rear deck) two Kicker C124's in a t-line tuned to 28.6Hz Kenwood KAC-7204 US amps 1600.4 V2 Upcoming Build this summer: T-Line enclosure for two C124's tuned to 28ish hz O_O amp my speakers with a US amps 1600.4. Second Skin Should be fun Link to comment Share on other sites More sharing options...
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