Ebay Junk - Episode 7 - JVC RX-8040B - 7.1 receiver - Repair video

[Music] all right here we got another eBay junk unit this one came from Tech Salvage again he actually just listed this last week I believe and it came today it's a JVC rx 84 TB he had up there for $39.99 plus 13 ship from him half twenty bucks and he accepted it so this was thirty three dollars to me and it said in the description that was tested the power only no further testing was done so let's go ahead and crack it open and see what we got here now came with the original box as you can see the unit itself and the remote so I don't think that was a bad buy for $33 I could probably get away with selling this for around 80 or so on Craigslist but see what happens first let's open it up see what we got here alright so we got here oh that's pretty shitty so the last few units that bought tech Salvage you did an okay job packed job they were pretty well packed the sony v triple five unit that i have it was packed in a solar cover really well done this one here is a total failure it's literally just tossed in the box here it's pretty bad literally just I don't think these styrofoam's are original I think that no they're not because they're bigger than the amp itself and we got a busted freaking it's not busted front cover hair just throwing in boats sitting down there first anyway I do you guys know the drill if you're watching any of my other videos we're gonna go ahead and test it for power first [Music] and then we'll go on and test sound [Music] okay now we got a red light that's good yes so it's gonna be one of those jobs and he's tested the power he said but you didn't mention it clicking out like that obviously we got a problem here so [Music] go ahead and take the cover off it and see what we got here all right so I've been turning into this for a while here I tested all the outputs on this there was fine it tests all the voltage regulators over here everything was fine proper voltages the transformer everything was fine I pull all the boards out one by one tested it stills clean out so among these boards were bad then I got to this area down in here and this area down in here the bottom board is kind of burned a little bit and see how well it's going to show up there in any event it's kind of hard to tell I'm here but this resistor up here it's pretty loose and it's actually not being held in anymore on the bottom side so I wonder if it burned through because I had 2.1 ohms and all these going up here and this one here I'm showing open so I got a bad resistor here but I want to see what the underside of this board looks like is it's pretty bad so I'll the next step here then is to unscrew this board and try to get it out to repair it I did cut most of these ties it is unplugged so let's say I'm going to do tonight it's actually getting kind of late I'm Wallace the by the way oh I get the sport out to take a look at the bottom side of it this might be a fairly simple project maybe I'd have to go look at the service manual again to find out what exactly this board is doing already so as you can see here that board is pretty toast down here oh yeah we got some repair work to do here so looking here all these resistors I might just replace every single one of these resistors a month pole service man to find out what they are or what they should be rather but every single one of these here is badly burned and the traces are burned up to see all that there like I said this one be 913 it actually just popped all the way through here so I got 9 13 14 15 16 17 18 it's probably 2.1 ohms I'm gonna have to go look that up alright so I pulled the service manual again and this is the system control board these six resistors here are in series there 1.8 ohm resistors essentially what's going on here is power comes in it's the first resistor it comes down goes through the second one over down through the third one over down over down over down and then back through the system here and pretty much every single one of these has bad solder is going down here obviously this resistor on the top is dead so I'm gonna go ahead and order up six resistors these are also to watch jobs let's see if I can get anything a little bit bigger and wattage for these because this is pretty bad and get that in and do some repair work and hopefully this fixes this problem I'm gonna go ahead and test some water stuff around here to just verify go from there hi so new ones showed up today they are the three watt 1.8 ohm resistors slightly bigger than the old ones so it's always a good idea to check this but this was like too plain to 2.0 good enough for me so this is gonna take a little bit of finagling to get it in there but I have to sort of bend them down to the next one solder it same thing here and here there's essentially three sets that you're gonna do or I'm going to do right first one here [Music] slide over here first one here I'm going to bring up it's with a solder joint [Music] [Music] I'm still on camera all right second one down here on the left side I'm gonna go ahead and tack down cut it in the first one on the left side I'm going to bring down to that solder joint because the solder pad here is charred and I'm going to attack these two together that jump over here to the right side go ahead and tack them down but I am going to bend them into each other I don't know how well somebody solder pads are so I don't want to just solder them to the pads okay last number five okay next thing I want to do here is same thing I did on the right side over here that's where I met so far so my soldering the two on the left and bring them down to my children solder will hot okay as a juice bottle moon there there check it [Music] last pin on the right side I'm gonna bring down solder it here and tack it here I'm sure if that was in camera or not sorry if it wasn't I'm pretty sure this one's kind of weird pretty sure clutches my tacit fold it solder it okay never got the six resistors in there I said this one here you want to keep away from the metal of this I see there's the back work here let's go ahead and pop it in and see what happens I guess let's go ahead and install this [Music] for you through hit carried away here spread and see if I actually have fixes power problem [Music] mm-hmm at the red light on the front fingers crossed here it's hopefully this it's fixed over you and [Music] right that's something new you're getting over a level tissue [Music] but then it clicked open food I don't think it's kicking out because I have these other boards out but to rule that out I'm gonna go ahead and put the rest of the boards in and then see if this overload issue is gone I'm not gonna screw anything in permanently let's just go ahead and plug this start popping some of these back in alright everything's plugged in here let's try this again I love to tune her out for now that hardly matters yes you do need to have all the boards in [Music] I wasn't really expecting that but all right obviously read this for sound now all right so we're all hooked up here ready to go I'm on CD our input just kind of weird it's got a CD and CD are but once you can see right here CDR go ahead and play over here there we go dip it to figure this out because I'm this sample there's nine off switch for different zones this is a seven point one amp channel amp and there's a zone 1 and zone 2 and they got the on/off switch is here and then there's on/off switch is here so took me a little bit to try to figure out that but this is zone 1 alright that's our zone 2 so we have it just had bad resistors on the main board there all right ladies and gentlemen the final test in here for this GBC so I have a 1215 hooked up to the phone on here I have one CD player going to optical I have another CD player going a CD input on analog I also have an antenna hooked up for am/fm so those are all the things that we're gonna be testing with this all right so let's go ahead and test out the phone O'Hair go ahead and hit start [Music] I'll take a little walk I would say fallen works go ahead and stop this so that takes care of the phone oh so let's go ahead and test out the CD analog so we're gonna go ahead and go this D okay so go ahead and switch over to [Music] am first [Music] so I would get a m-move all down here but sorna warning FM now [Music] hey MSM works alright and last thing the test here is the digital I have the jukebox here going into CD R which I have selected here and then this unit you guys actually manually select digital down here which I did [Music] so say it's a fully working receiver now also comes with the original box and the original remote for it as well so that's it so some resistors and that fix this problem so stay tuned to the next one Joyce I appreciate the views likes and subscribing and like I said stay tuned

Channel: Frank-Tech

Views: 14,506

Rating: 4.8222222 out of 5

Keywords: Ebay junk, parts or repair, JVC, JVC RX-8040B, Ebay

Id: S6ZgBqIGwVE

Length: 26min 1sec (1561 seconds)

Published: Sat Jul 21 2018