Let's See Your Great JVC Gear!

Discussion in 'Solid State' started by GD70, Dec 9, 2013.

  1. mstrane21

    mstrane21 Well-Known Member

    Messages:
    728
    I found a manual for the similar 1010V on hifiengine.com and looked through it for a while. The problem is I honestly don't even know what part I'm looking for. I am not exactly learned on reading schematics to say the least. I'd bet a decent amount of money that the 1010 uses the same part.
    http://www.hifiengine.com/manual_library/jvc/rx-1010v.shtml
     
  2. redk9258

    redk9258 Super Member

    Messages:
    1,317
    Location:
    Illinois, close to St. Louis.
    Looks like the manuals I have are for the RX-905VTN and RX-999VBK.
     
    Last edited: Feb 13, 2018
  3. redk9258

    redk9258 Super Member

    Messages:
    1,317
    Location:
    Illinois, close to St. Louis.
    See if you can find a C491 or C492. That is the designation on several other models. It is listed as 47,000µF 5.5V (.047 Farad 5.5V).
    It may or may not look like this...

    CM180213-200603004.jpg
     
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  4. redk9258

    redk9258 Super Member

    Messages:
    1,317
    Location:
    Illinois, close to St. Louis.
    mstrane21 likes this.
  5. mstrane21

    mstrane21 Well-Known Member

    Messages:
    728
    Okay that is incredibly helpful. The 1010V manual lists a value of .047uF/5.5V value for part C492. As a stroke of luck, i just ordered TWO .047uF/10V caps today (I have recently started ordering twice what I need so I have caps on hand) to fix the same issue in a Yamaha R8 receiver. Thanks so much for your help, it is very much appreciated!


    ***exit: I apparently purchased the wrong rating, but at least I know what to order now and where to locate the part on the circuit board. Thanks again!
     
    Last edited: Feb 13, 2018
  6. jvc_graz

    jvc_graz Active Member

    Messages:
    131
    Location:
    Graz, Austria
    here are a few more "laboratory" equipment from 1975- under test.
    These MUST always be maintained, be it the simple exchange of the lamps against LEDs, various trasistors and resistors. the goal is to achieve long-term stability. not to forget the variable resistors or various ic's in the vu- meters of the jm-s1000 ...

    [​IMG]

    an example of a completely refurbished board with the marking of critical components (JM-S1000):
    But according to the title, no repair report should take place here...

    [​IMG]

    regards, jvc_graz
     
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  7. Wally1955

    Wally1955 Member

    Messages:
    86
    Location:
    Hamburg-Germany
    Good evening all JVC/Victor Fans
    Picked up this morn one very nice Victor M-7070 in excellent shape from Hamburg Hauptzoll Amt
    Catched unfortunatly only one of this cute Monoamps in the Tokyo Bay maybe thats why costs just few Yen
    Sitting here and enjoy the monoral sound with a pair of
    JBL L19 and really must say after couple of hours listing session wish to have urgently another
    one of this xtraordinary good sounding
    little beast
    one quest to the experts sofar didnt see the watt indicator lamps give any sign of action all dark guess there must be something wrong Lamps broken my guess or some other problem sofar im listening to lower level but even if set volume up for short moment its all dark,anyway compare the 7070 with my other Victors soundwise this one is a head of the others
    Well thats the first impression in my ears and all subjective
    testing all equipment with Jbl l19 first and later with other speakers luckly this amp got 2 speaker output
    Arrrgghhhhhhh damn what a good sound now right my choice
    Radioparadise sounds extremly good cause amp is on fire now
    Cheers
    :beerchug:

    DSC02367.JPG

    some naked pics


    DSC02360.JPG

    DSC02357.JPG
     

    Attached Files:

    Last edited: Feb 15, 2018
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  8. GD70

    GD70 AK Subscriber Subscriber

    Messages:
    12,662
    Location:
    Northern Westchester Co, NY
    Nice grab! Keep looking for a mate. Watt indicator light board may have cold solder joints. Pull the cover off and have a look. See if moving the light board while playing music they start working.
    Do I spy a M-7050 under the 7070? I have three of them. Fantastic power amps!
    Glenn
     
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  9. Wally1955

    Wally1955 Member

    Messages:
    86
    Location:
    Hamburg-Germany
    Hey Glenn
    Yeah nice grab the 7070 just 12000Yen and need a mate for sure
    You right its a 7050 another Gem in my arsenal of sound its understandable you got 3 of them in yours
    well ill try to fix the indicator lamp problem myself but how to check cold solder points hummmm?
    cheers
    Wally
     
  10. GD70

    GD70 AK Subscriber Subscriber

    Messages:
    12,662
    Location:
    Northern Westchester Co, NY
    If the meter lights board, (are these LED's on a board?) see if there's any board movement. This would indicate the solder joints are loose, and not making solid contact.
    Looks like you'll need pull another cover to see the meter board. Post some close up pics.
    Looks very clean in there otherwise!
     
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  11. tanker 200

    tanker 200 Well-Known Member

    Messages:
    709
    Location:
    Northwest Washington
    [​IMG]

    Nivico 5030U
     
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  12. GD70

    GD70 AK Subscriber Subscriber

    Messages:
    12,662
    Location:
    Northern Westchester Co, NY
    Love these models! Looks very clean. How it sound?
    My dad has the predecessor, 5301 receiver. It will need some work though, been sitting for years unused. He's the original owner from 1968!
     
  13. tanker 200

    tanker 200 Well-Known Member

    Messages:
    709
    Location:
    Northwest Washington
    It sounds very nice, I have it connected to a pair of Dynaco A-35's and it's definitely a keeper. I made the mistake of trying to straighten out the bent tuning knob, but you know how that goes, It snapped right off. luckily I was able to drill the shaft and repair it with a brass rod. I planned on soldering it in place but I found out that I own 3 non working soldering guns.
     
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  14. GD70

    GD70 AK Subscriber Subscriber

    Messages:
    12,662
    Location:
    Northern Westchester Co, NY
    QUOTE="Oilmaster, post: 11317394, member: 94737"]I let you guys soak up this scenery in my living room last xmas :beatnik:
    True Victor guys know what these are......
    It took me 5 years, or is it 6.....?

    One unit belongs to a fellow AKer in California who shipped it to me for a decent preserving renovation, which triggered the renovation of all four units in one go. Started that project 3 weeks ago; expect to take 2 months for the first one, then 1 month for each other one. When all are done I intend to do a profound dedicated thread on it

    View attachment 1113140 [/QUOTE]
    Drool worthy. :eek2:
     
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