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Jose Nguyen
Jose Nguyen

Sansui Lcd Tv Service Manual NEW!


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Sansui Lcd Tv Service Manual



Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation.


4. Unless specified otherwise in this service manual, cleanelectrical contacts only by applying the following mixture to thecontacts with a pipe cleaner, cotton-tipped stick or comparablenon-abrasive applicator; 10% (by volume) Acetone and 90% (byvolume) isopropyl alcohol (90%-99% strength)CAUTION: This is a flammable mixture.Unless specified otherwise in this service manual, lubrication ofcontacts in not required.


8. Use with this receiver only the test fixtures specified in thisservice manual.CAUTION: Do not connect the test fixture ground strap to anyheat sink in this receiver. Copyright 2007 Tehnomagazin.com Terms & Conditions Privacy Policy Impressum


Always wanted to buy the 9090DB but out of my league cost-wise. I just bought the QR6500 receiver from an estate sale and want to thank you so much for this site as I also bought an Akai X355 reel to reel and found both operations manuals on your site Just love the stuff from the good ol daysThanks again, Cabowabo


Recently swapped my audio dead Panasonic 9XX, do everything receiver for a Sansui 9090 plus some cash. Found it in old shop here in New Mexico. Seems in perfect condition and sounds really good. Already owned a Sansui 2000A from 70's Audio/Photo Club in Germany. Was looking for documentation on the 9090. Have docs on 2000A, if anyone needs a copy. First time on site and from reviews and replies, it's a great find. The previous owner has RCS type cables in place of the Pre-Amp jumpers - guess that's ok, right? Downloaded the user's and service manuals, thanks very much. Will learn all the toggles and knobs functionality. Thanks. jn


WHAT A WONDERFUL AUDIO WORLD OUT THERE - thanks to all you hifiengine.com Ame-goes. Pardon me if I write to much this first time, excited as I am about having found you.I come limping in from the audio cold. My 20-year-ago, Albuquerque flea-market-treasure, a Sansui 9090db Receiver, is almost hypothermic. My dusty N.M. years took the first tole. The pots all got The Grit. The volume control got it the worst, so bad in fact that Big Su gradually became all but mute, 5 years ago. At that time, I talked to an audio store owner, one of a very few here in remote, northern N.Y. He said parts couldn't be found for a 9090db any more - couldn't be fixed. That sounded like Dead Mans Curve for Big Su...so...sadly, the once proud Leader Of The Pack was wrapped in black plastic and entombed in a dark concrete cellar. Would she ever see the light of day again?Strangely, a glimmer of hope came after being sold some new audio components. I assumed my new amp had a preamp...wrong. But I refused to buy the now-necessary preamp for my seldom used but much loved turntable, that, after having purchase a now-necessary equalizer. I have high end hearing loss. And the new Cambridge Audio 540 amp just didn't do it with bass and treble only. What was I thinking, I had lots more EQ (and power to push it) on my old Sansui and I loved that. But now, I admit, I am sold on my new-to-me, used, Hefler 10 band per channel, stereo equalizer.Still, flexibility was lacking with my new system. Unable to plow my rare platters, I became desperate - desperate enough to entertain the hair-brained idea of exhuming that 9090db behemoth from the willies world down below and running my (slow to start but eventually steady) Pioneer PL51 direct drive turntable thru it. After all, a guy's got to do what a guy's got to do - right? Funny, the sweet satisfaction when that worked.Some time later, I tried giving Big Su a bit more to do. It just seemed ridiculous to have a 60 lb. phono preamp. That's when I noticed The-Flashing-Red-Light.One weak channel on a power meter was OK - nauseating - but OK. I'd tell myself not to look at it. (Don't look at it...don't...) No owners manual to figure out how to benefit from the lauded db (Dolby) feature was an unsolved mystery I could live with, I had lived with it for 15 years and figured I'd probably die with it. The increasing crackle of the attenuators, leading to near total dropout of sound, that's what put Su away in the first place. And now this, this unstoppable blinking light - was it telling me...what...that my uncontrollable amp is now dead!?So what. On the BLINKING bright side, I have the only working 60 lb phono preamp in the world and it comes with a BLINKING RED LIGHT. I've been grateful ever since.For years though, I feared my big beautiful Sansui was one blink away from total Flat-Line, that is until now, now that I've read all your 9090db posts, all you hifiengine Ame-goes. I now see, you've been thru it. You understand. You haven't given up. Your telling me, Big Su could be, again, the great gal she once was.I'm not a technician and my budget...it'll be a STRETTTCH...again. But a guy OUGHT to do what a guy OUGHT to do! Write. $WHERE TO BEGIN$.I'm all warmed up now, thank to you...John


A friend "and GE Equipment fan-atic" sent me a friend to see if I could repair his1970s Sansui db9090 with no lights and a weak and distorted left channel.I found the schematic and service manual on your site - Great Copy by the way!


i just repaired a sansui 9090 both channels contained the 2sc1116a's they are correct. the unit worked fine after the repair. check for resistors on the driver board that may have drifted out of tolerance this seems to be the most common problem in the older sansui units.


I still have my 9090db from when I bought it in Viet Nam in 1970. It needs some minor repair and I am thankful to this website for the manuals when I take it in for complete rehab soon. I used to have all original box, etc but lost in a multitude of moves since 1972.The thing about these old receivers is the tape monitor button. My 4 yr old Yamaha home theatre receiver does not have one which makes my Bose 901's useless. Did not know this to be the case at purchase and I am very unhappy about that. I am wondering if perhaps I might be able to use my 9090 as a slave amp connecting to my Yamahahahaa in order to use the 901s. Any ideas?


I'm delighted to have found this site and have hope for resurrecting my 9090db. I had been told it was not repairable but I simply have not had the heart to trash it; there's something sacrilegious about the thought of trashing this unit! I've now downloaded the manuals (thanks very much!).


I found my Sansui receiver in an abandoned/evicted house down the road several months ago in dusty condition, and had it put up until I had room for it a couple of weeks ago. I'm currently using JVC Giga-Tube speakers with it. The speakers have 7" subwoofers in the bottom, 4" woofers in the top, and just under 2" tweeters in the middle (see attached image). I don't have the console that goes with them because the speakers were given to me from a neighbor by themselves. Until I found my Sansui, no console I had could power them correctly. The Sansui works amazingly with them, and they sound GREAT. The only flaw on it is that when I use the AUX input, the right channel cuts out. When that happens, I usually plug the right channel into one of the PHONO inputs and have to blast sound out of the right channel to get it to work on AUX. A few minutes ago, I downloaded the manual and found out how to use the PLAY input for tape players as an aux input instead, but I'd still like to know how I can fix the AUX problem correctly if anyone knows what I can do.


What a wonderful feeling coming across this site. I had this wonderful receiver bought in 1979 when I was a student in Baton Rouge, Louisiana. Back in Malaysia I have it hooked to a Thorens turntable and a pair of KEF speakers. The three were just a great combination and the Sansui 9090db functioned flawlessly until a year ago when the volume suddenly ceased. I have been trying to figure out the problem, since having no service manual I am afraid I might ruin the receiver. Now with the service manual from hifiengine I hope I can have the problem fixed. Thank you very much.


The left channel is not working (seems to be a common problem) and I just downloaded all of the manuals. I hope I can get this left channel to work, because I remember the nice sound that this 125 wpc put out, I use to drive my mom and dad crazy.


Hello:I just purchased a Mint condition Sansui 9090. It did not come with a manual and I would like to thank the person that took the time to help other Sansui collectors like me.All the best,Rocky


I would like to thank whoever uploaded this 9090 DB schematic to theHI-Engine Website. I could not believe what some people are askingfor a less than perfect copy of a schematic or service manual.It's is really disappointing that something which was all but worthlessa few years ago and given new life and interest by the love and respect of high quality, professional Sansui products is now being offered in such a disgusting blatantly oppertunistic fashion.They ALL should learn a lesson from HI-FI Engine and start sharing these documents amongst the vintage audio community members who are currently in the process of insuring the longevity of these masterpieces of audio engineering for the generations to come.Thanks to all of you at Hi-FI Engine, your community members and the greater community of vintage audio lovers et.al. for your contributions, comradery and vision of an InterNet for the open exchange of ideas, experiences and information of ALL kinds. 041b061a72


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