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Car Forum / Driving, Maintenance, Tuning / Car Audio / August 2008blown amp?
I have a JVC KD-S890. I take it that the component presed right up against the heat sink is the amp. I'm guessing that the scorch marks around it on the PCB means the amp is fried. Is this the case? The unitturns on and plays a CD fine, but no sound comes out no matter what I try. look steve, this is a $400 amp 1 minute. pick of junk the next hobby..thats why i buy extra amps when i see them cheap.. stop ya crying. you can buy a good cerwin vega amp $85.... cheaper than fixin the burnt up piece of junk ya have. oh n steve. youll get use to that happening around the 3rd time....lol I can see that whole words are a difficult concept for you so I'll try to put it into terms you can understand. A JVC KD-S890 is a head unit. Inside theres a part that makes the signals stronger. There's scorch marks around it on the circuit board. (still with me?) Is the head unit junk or can this be repaired? > look steve, this is a $400 amp 1 minute. pick of junk the next > hobby..thats why i buy extra amps when i see them cheap.. > stop ya crying. > you can buy a good cerwin vega amp $85.... > cheaper than fixin the burnt up piece of junk ya have. > oh n steve. youll get use to that happening around the 3rd time....lol lol..''was'' a head unit.... you seem not to want to face the facts..... Hi Steve, Determining whether or not it is worth repairing really depends on how much damage was done to the circuit board. If the copper traces are still intact and there is just a bit of residue from the point of failure there's a good chance you will be able to repair the unit inexpensively by tracing the fault and then replacing all affected parts. If the copper traces on the circuit board scorched away then there must have been such a catastrophic failure that you probably would not trust the unit even if it was able to be repaired. The fact that a fuse did not blow probably suggests that either the amplifier in the head unit consisted of a single IC, and it quickly failed to an open circuit condition, or some form of circuit protection activated if the amplifier IC failed short. - Anthony >I can see that whole words are a difficult concept for you so I'll try to >put it into terms you can understand. [quoted text clipped - 11 lines] >> cheaper than fixin the burnt up piece of junk ya have. >> oh n steve. youll get use to that happening around the 3rd time....lol oh steve, you should correct ya post.. its you ''had'' a jvc amp.......sorry. > I have a JVC KD-S890. I take it that the component presed right up > against the heat sink is the amp. I'm guessing that the scorch marks > around it on the PCB means the amp is fried. Is this the case? > The unitturns on and plays a CD fine, but no sound comes out no matter > what I try. Although your head unit can be repaired, I would recommend replacing it. Park Ave Electronics has one for $109.78 here: http://www.parkaveelectronics.com/product.asp?itemid=JVCKDS890&l=Froogle You would be hard pressed to get anything repaired for less than that. Hell, one of the electronics shops in town requires a $150 deposit before they will even look at anything. If the repair is less, they refund you the difference. There are VERY FEW instances where the repair is less than $150! If you were looking to upgrade, now may be a good time OR you can just replace with the same head unit, then plug in and go! -Chris >> I have a JVC KD-S890. I take it that the component presed right up >> against the heat sink is the amp. I'm guessing that the scorch marks [quoted text clipped - 16 lines] > >-Chris Wow prices are crazy. I need a new HU for my truck, its broke, but it needs a subwoofer low pass out to drive the sub. I bought that crazy Pioneer HU for $450 in 93 and a $300 CD changer. The Hu gave me problems early on. I also spent $55 for the manual. That was an $800 system plus amps. greg >>> I have a JVC KD-S890. I take it that the component presed right up >>> against the heat sink is the amp. I'm guessing that the scorch marks [quoted text clipped - 23 lines] > > greg Yeah, tell me about it! I replaced the Skipper 500 Head Unit in my 2006 Mustang GT with an Alpine CDA-9885 from Crutchfield for a whopping $250 and they included the IPOD cable and installation kit. When the head unit in the 1997 Civic started giving me problems, I went to Crutchfield again, and purchased another CDA-9885 for it at the same price with everything included. Hell, in January 2000, I remember paying $600 for a pre-amp only Alpine deck that couldn't do half of what these can do! As of late, my new attitude is to say screw CD changers. An 80 Gigabyte IPOD kicks a.s, especially when you encode your music in Apple Lossless format! Another plus is that I saw the light when I used to DJ and ripped all my music at 320 kbps, so those MP3s sound pretty dang good too. Oh well, I went off on a tangent, but yes, I am amazed at how prices have come down myself! -Chris ohh please.. stop..i used a box of kleenex already...lol > ohh please.. stop..i used a box of kleenex already...lol and some guy named Bob ended up with my Sherwood amps (sniff, sniff)... On a serious note, I am amazed at what you get for the price these days compared to the insane prices I managed to pay for equipment in the late 80s and early 90s. I guess technological advances and moving manufacturing to countries with slave labor wages has its advantages... i only buy new....now go cry some more..... > i only buy new....now go cry some more..... I actually purchased a Rockford Fosgate Power 1000 25 to Life amp today on closeout for less than 1/3 of the retail price! I will let you know how I like it as soon as I figure out what sub I am going to put in my 2006 Mustang GT. Do you have any thoughts on the new Hifonics Zeus series amps? I am thinking about getting one for my 1997 Civic EX. Again, I need to figure out what sub I want to put in it. rf.....lol isnt rf power hogs???? > rf.....lol isnt rf power hogs???? Yeah, but this price was too good to pass up! In 1990, I paid MORE for a Punch 150 than I paid for this brand new Power 1000 25 to Life amp! always wanted to try the hifonics amps..but again...just wasnt in the cards..i bought boss instead......lol hifonics looked kinda too big. i bought acouple boss ''riots'' amps... loved the see thur windows....lol > always wanted to try the hifonics amps..but again...just wasnt in the > cards..i bought boss instead......lol > hifonics looked kinda too big. > i bought acouple boss ''riots'' amps... > loved the see thur windows....lol I am going to get one within the next 3 months or so. They seem to be a pretty good value for the price you pay. yeah n a 5-6 warrenty! or use to have it... I've never been inside that HU, but if you can post the markings on the IC, I might be able to point you in the right direction for a replacement. A digital photo would be helpful too. No guarantee's, but the amplifier IC is usually pretty cheap and from what you describe, is likely to be the only thing damaged. Chris I have a JVC KD-S890. I take it that the component presed right up against the heat sink is the amp. I'm guessing that the scorch marks around it on the PCB means the amp is fried. Is this the case? The unitturns on and plays a CD fine, but no sound comes out no matter what I try. I have not come in contact with any "cheap" internal amplifier chips. Especially if you go through a parts supplier. I use to repair stuff on a regular basis and now and again to this day. The IC's that Pioneer stereos use are always pricey at $50 or more. I've come across a few "close out" deals on some older chips but most of the mosfets used in today's stuff seem to be considered gold when it comes to prices that are charged for them. Add in a repair shops inflated labor costs and you might as well just purchase a new unit. With that said if you need one I have a few 100 "older" head-units available :) or if you want to attempt the repair yourself I may be able to scrounge up an IC for ya if you let me know the labeling on it. I don't want to go dig up my service manual that is in storage to find the info. As for doing it yourself a lot of today's stereos have 3-layers of circuit board traces and most of the time you damage the inner layer when removing the IC if you don't have the proper tools or a LOT of luck. > I've never been inside that HU, but if you can post the markings on the IC, > I might be able to point you in the right direction for a replacement. A [quoted text clipped - 9 lines] > The unitturns on and plays a CD fine, but no sound comes out no matter what > I try. Huh? I just repaired a top of the line 300W Sony ES home power amp with a STK class A driver IC that cost all of $5.98 on Ebay. You telling me the ouput IC in a $179 Pioneer HU is going to cost 10X what this bigger driver IC in an expensive home amp sells for? Give me a part number! JD > I have not come in contact with any "cheap" internal amplifier chips. > Especially if you go through a parts supplier. I use to repair stuff on a [quoted text clipped - 38 lines] > >>I try. ** Posted from http://www.teranews.com ** I said if you go through a parts supplier. I don't consider Greedbay a parts supplier. I have gotten deals on Greedbay however like the one that you mention. Greedbay though is a HUGE market for knock-off/fake IC's that are a heck of a lot less stable and unreliable than name brand.Yes I am saying your $179 Pioneer HU can cost you quite a bit to replace a blown chip. I bet that IC you purchased would be at least in the $30 or up range. Luckily I have not had to replace any as of late but I know about two year ago Pacific Coast Parts wanted $59 for a PAL004A. Luckily I did find it's alternative on Greedbay. Just because a part is larger than another does not determine it to be more expensive. If you want to look up a part look up the PAL007A on Greedbay; its even $27 then scroll down and look what one seller wants and pleads to get for his/her PAL005A. WOW someone must be desperate if they want to pay that price. Heck I have a few I'd sell someone for 1/2 that :) > Huh? I just repaired a top of the line 300W Sony ES home power amp with > a STK class A driver IC that cost all of $5.98 on Ebay. You telling me [quoted text clipped - 47 lines] > > ** Posted from http://www.teranews.com ** Actually, you first said you had not come in contact with any cheap amplifier chips, followed by the comment about parts suppliers. It's the "Heck I have a few I'd sell someone for 1/2 that" thought process that makes it possible to find a lot of those parts on Ebay for a lot less than full retail. I gather from your inability to write "Ebay" that you find their services not only of no value but somehow criminal... I don't think anyone is ever going to mistake them for a philanthropic organization (particularly if they keep whittling away at the sellers' position & increasing fees, in favor of increasing the number of unqualified & unrealistic buyers), but nobody does a better job of allowing you to easily turn your junk into someone else's junk for fun & profit, or to fill your house with someone else's junk at a reasonable cost. For all of its flaws it has transformed the used electronics business (just to cite one segment) and impacts the buying habits of millions. Am I to assume you think that should be done without charging anything? You said yourself you were lucky to find the alternative part you needed instead of paying PCP $59, does that make Ebay greedy or you cheap? Seems pretyt hypocritical, no? As for knock-offs, that's a good point... but the guys making big money in fake semi's are mostly doing it selling them to greedy or desperate factories in Asia that are being squeezed to maintain their costs so we can enjoy $59 power amps over here. Buying knock-offs can mean they can continue to make their profits in the process. Or you have places that don't pay enough attention to their incoming parts inspection, have buyers on the take, etc. etc. Pretty tough to pay for a largescale knock-off operation selling onesy-twoesy on Ebay... Buying from authorized part houses like PCP or Andrews etc. isn't a guarantee that you'll avoid knock-offs, a lot of fully legit companies have been stung in the past. It does however guarantee you'll be paying full retail though, unless you establish a business account with them. JD > I said if you go through a parts supplier. I don't consider Greedbay a parts > supplier. I have gotten deals on Greedbay however like the one that you [quoted text clipped - 102 lines] >>> >>** Posted from http://www.teranews.com ** ** Posted from http://www.teranews.com ** Some may be wicked, and some may be despicable. Only when I put mysel in their position did I know they are more miserable than I. So forgiv all that you have met, no matter what kind of persons they are ________We provide the 'wow powerlevel (http://www.wowgold1000.com/wow-power-leveling.html) all the server and the first class service to our loyal and reliable customers. W have available stock of 'age of conan gold (http://www.wowgold1000.com/age-of-conan-gold.html) on most of th servers, so that we can do a really instant way of delivery. W understand what our buyers need so we offer an instant way of deliver 24 hours a day. If you have a hurry using of 'cheap age of conan gold (http://www.wowgold1000.com/age-of-conan-gold.html), you may come t here . We can delivery your 'aoc gold (http://www.wowgold1000.com/aoc-gold.html) on the order in a shor while.'buy aoc gold' (http://www.wowgold1000.com/aoc-gold.html) for http://www.wowgold1000.co -- pqrs883 This is a very good point. If you are going to attempt the repair yourself, and are not experienced with soldering, try to find a friend who is. Use low-temp irons, take your time, and use quality equipment. I refuse to use anything other than my trusty Metcal when doing repairs. Metcal gun + air compressor + patience = a good, solid repair! - Anthony >I have not come in contact with any "cheap" internal amplifier chips. > Especially if you go through a parts supplier. I use to repair stuff on a [quoted text clipped - 37 lines] > what >> I try. |
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