escee Posted January 6, 2005 Share Posted January 6, 2005 Just got a 95 sc400. Love everything except I'm a little too tall for it - my head rubs against the cabin ceiling, causing massive static in my hair :cries: looking like bride of frankenstien! Beyond that, the cd changer was broken. In the process of attempting to fix the cd changer, i believe the wire harness that plugs from the amp into the cd changer began to go intermittant on me. Thus I started messing with the wire harness. Started the car, and now radio will not power up. All three radio fuses are okay (one in the engine fuse box, two in the kick panel fuse box). My basic question is: what happened!? Is the head unit fried? Is the amp fried? Could a cable be fried? Is there a fuse somewhere else? How can I test what element is fried? If amp is fried, will radio power up? Any and all help would be great, thanks! Quote Link to comment Share on other sites More sharing options...
caglo Posted January 6, 2005 Share Posted January 6, 2005 Sounds like an amp issue to me. In my experience with my fried nak amp the head unit would power up but not without the changer connected, so if your changer is broke that may explain that. I'm no pro though. I got my amp repaired at dealer for 200 with warranty. Quote Link to comment Share on other sites More sharing options...
escee Posted January 6, 2005 Author Share Posted January 6, 2005 Sounds like an amp issue to me. In my experience with my fried nak amp the head unit would power up but not without the changer connected, so if your changer is broke that may explain that. I'm no pro though. I got my amp repaired at dealer for 200 with warranty. ← Head unit was working without changer attached. Is there some "remote on" or somesuch wire that could be fried or reset? I read that in another post, the fix involved crossing the 12v with the remote wire but I've no idea which is which. Time to start sticking my screwdriver into all kinds of odd places. Quote Link to comment Share on other sites More sharing options...
92Lex Posted January 6, 2005 Share Posted January 6, 2005 Does the HU have power? Quote Link to comment Share on other sites More sharing options...
escee Posted January 6, 2005 Author Share Posted January 6, 2005 Does the HU have power? ← No power to the head unit at all. Just tried a technique from sportcoupe300. plugged in amp, and bridged the 12v to the remote on. The antenna went up, but no head unit power. The amp should have powered up, but how can you tell if the amp is powering up? All fuses are fine, and there is power back to the amp. I now have the amp out of the car, and open, does anyone have a technique to test if the amp is burnt? Quote Link to comment Share on other sites More sharing options...
llama Posted January 7, 2005 Share Posted January 7, 2005 escee, Check out http://www.intellexual.net/faq/lexusstereo.swf This is a link for the Pioneer amps, but if you spend enough time with it, it can help you with the Nakamichi. Quote Link to comment Share on other sites More sharing options...
escee Posted January 7, 2005 Author Share Posted January 7, 2005 escee,Check out http://www.intellexual.net/faq/lexusstereo.swf This is a link for the Pioneer amps, but if you spend enough time with it, it can help you with the Nakamichi. ← I believe the above information is not correct for the pioneer system in the 95 sc400. This diagram appears to be accurate: http://www.lexuspros.com/tutorial2.htm If anyone could clarify, that would be great. BTW - I've searched all over this site, and the only answers for "my radio has no power" questions are check the fuses. If the fuses are fine, any other possibilities? Quote Link to comment Share on other sites More sharing options...
cal9126 Posted January 8, 2005 Share Posted January 8, 2005 yo escee i have the same problem as you. I have a eclipse av5101 flip out tuner screen with a dvd player below it. The dvd player below works and all the other electrical components, windows climate, they all work. Everyhting except the screen does not turn on. I have no idea what could be wrong with it. i thought a cable behind it came loose but all were in properly. i have also too checked all the fuses and to no avail. Driving with no music really sucks. Peace Quote Link to comment Share on other sites More sharing options...
escee Posted January 8, 2005 Author Share Posted January 8, 2005 Darth Vader mobile, just me driving around, breathing. Other day, driving, van stopped in front of me, I change lanes into right lane. As I come around side of van, homeless dude comes out from in front of van into my lane. Stopped on a dime. Psycho stop. If that was in the prelude... I might be in jail, or at the least, a lot of trouble. So who can complain? The SC has some serious upside, even if it is dead quite right now. Quote Link to comment Share on other sites More sharing options...
escee Posted January 12, 2005 Author Share Posted January 12, 2005 Is there another fuse in the HU, behind the HU that could be blown? So far for audio, I know of only 2 fuses. One in each fuse box. Any others anywhere else? Quote Link to comment Share on other sites More sharing options...
cal9126 Posted January 12, 2005 Share Posted January 12, 2005 i was messing around with my fuses today and i put new ones into the boxes. I now have the antenna come up and only one station is playing. The thing is the head unit still isnt turned on and i cant control the volume, stations, etc. I dont get it?? peace Quote Link to comment Share on other sites More sharing options...
DLaxMan3 Posted January 12, 2005 Share Posted January 12, 2005 What number fuse in the kick panel box controls the headunit, and if that one is blown, would it have anything to do wih blowing the fuse under the hood just by inserting it. Quote Link to comment Share on other sites More sharing options...
escee Posted January 13, 2005 Author Share Posted January 13, 2005 its a 7.5 A fuse. And there are pictures on these forums of the fuse locations, do some audio searches. Quote Link to comment Share on other sites More sharing options...
rich21 Posted January 14, 2005 Share Posted January 14, 2005 i have no power going through my radio and cd changer also. i checked the engine fuse box and the fuse was blown. i put a new one and the second i put it in it just blew again. i have no idea what it is and where or what to start looking for. Quote Link to comment Share on other sites More sharing options...
escee Posted January 17, 2005 Author Share Posted January 17, 2005 Thread is dead, with no real info. Sad. Quote Link to comment Share on other sites More sharing options...
cal9126 Posted January 17, 2005 Share Posted January 17, 2005 yes it sure is. No answers yet. Guess ill just have to take it to a car audio shop and get ripped off to get it fixed. Quote Link to comment Share on other sites More sharing options...
DLaxMan3 Posted January 19, 2005 Share Posted January 19, 2005 i think there are two fuses in the enging fuse box numbers 15 and 20 i might be wrong but i think thats it. and if you pull both of the those out for 30 seconds it will reset the computer controlling the audio. Quote Link to comment Share on other sites More sharing options...
escee Posted January 19, 2005 Author Share Posted January 19, 2005 Was under the impression that there was only 1 fuse in the engine fuse box, and one in the kick panel. Quote Link to comment Share on other sites More sharing options...
sergioon20 Posted January 23, 2005 Share Posted January 23, 2005 Just got a 95 sc400. Love everything except I'm a little too tall for it - my head rubs against the cabin ceiling, causing massive static in my hair :cries: looking like bride of frankenstien! Beyond that, the cd changer was broken.In the process of attempting to fix the cd changer, i believe the wire harness that plugs from the amp into the cd changer began to go intermittant on me. Thus I started messing with the wire harness. Started the car, and now radio will not power up. All three radio fuses are okay (one in the engine fuse box, two in the kick panel fuse box). My basic question is: what happened!? Is the head unit fried? Is the amp fried? Could a cable be fried? Is there a fuse somewhere else? How can I test what element is fried? If amp is fried, will radio power up? Any and all help would be great, thanks! ← Sup man, my name is sergio. Im 20 yrs. old, and i own my own shop wich we do custom audio install but we major in electrial problems. from my 13 years experience with these !Removed! lex factory audio systems, the problem is the radio itself. the amp is problaly ok, no a cable wouldn't be bad, there is no other fuses u found them all it sounds like, unless u have a new radio or another lex to put ur radio in u really cant test it, yea if the amp is fried the radio[ from what i know] may still come on u will have no sound. if u want to add a new radio, a aftermarket mounting kit is avaiable 4 ur car. if u still need help or have a question, call me @ 216-376-4515 Quote Link to comment Share on other sites More sharing options...
sergioon20 Posted January 23, 2005 Share Posted January 23, 2005 Just got a 95 sc400. Love everything except I'm a little too tall for it - my head rubs against the cabin ceiling, causing massive static in my hair :cries: looking like bride of frankenstien! Beyond that, the cd changer was broken.In the process of attempting to fix the cd changer, i believe the wire harness that plugs from the amp into the cd changer began to go intermittant on me. Thus I started messing with the wire harness. Started the car, and now radio will not power up. All three radio fuses are okay (one in the engine fuse box, two in the kick panel fuse box). My basic question is: what happened!? Is the head unit fried? Is the amp fried? Could a cable be fried? Is there a fuse somewhere else? How can I test what element is fried? If amp is fried, will radio power up? Any and all help would be great, thanks! ← Sup man, my name is sergio. Im 20 yrs. old, and i own my own shop wich we do custom audio install but we major in electrial problems. from my 13 years experience with these !Removed! lex factory audio systems, the problem is the radio itself. the amp is problaly ok, no a cable wouldn't be bad, there is no other fuses u found them all it sounds like, unless u have a new radio or another lex to put ur radio in u really cant test it, yea if the amp is fried the radio[ from what i know] may still come on u will have no sound. if u want to add a new radio, a aftermarket mounting kit is avaiable 4 ur car. if u still need help or have a question, call me @ 216-376-4515 ← p.s ive done 250 of these cars no lie. i know that whole audio system id like it if u call me i can help u Quote Link to comment Share on other sites More sharing options...
escee Posted January 24, 2005 Author Share Posted January 24, 2005 So Surge, your diagnosis is that the HU is fried, and the amp is alright? If that is the case, I was under the impression that there wasn't an aftermarket mounting kit that fit the SC, all other models of lex but not the SC pre, like, '96(doesn't make sense to me...). If there is a kit does it look good? Beyond that... I'm strapped for cash right now, could I drop an after market hu into the aftermarket mounting kit, and just wire that into my stock amp with stock speakers. I know that isn't really the audiophile way to go, but will it sound at least as good as the old stereo (which wasn't that good)? Thanks man! Quote Link to comment Share on other sites More sharing options...
escee Posted January 28, 2005 Author Share Posted January 28, 2005 berdump Quote Link to comment Share on other sites More sharing options...
cal9126 Posted January 28, 2005 Share Posted January 28, 2005 So no one has found a fix to this yet? Quote Link to comment Share on other sites More sharing options...
escee Posted January 29, 2005 Author Share Posted January 29, 2005 nerp Quote Link to comment Share on other sites More sharing options...
rich21 Posted January 30, 2005 Share Posted January 30, 2005 i have the same problem but my fuse in the engine compartment is blown. i put a new one and it blew again. don't know what to do or where to look for the problem. Quote Link to comment Share on other sites More sharing options...
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