Static in both channels Sansui G-8700db

VSAT88
VSAT88 Posts: 1,257
in 2 Channel Audio
Picked up a Sansui G-8700db last week. Fired it up after a spell on the veriac. Anyway, I have an even static sound in both channels A or B no matter how far volume level is turned up. I have tried the following. Deoxit all switches and pot's, try different inputs ( it does not matter if I use FM or a CD player on any input it does the same ), I cleaned the relays as well. Nothing I did has changed the sound in any way. Just FYI this was barn find so it has been thru a lot. Anyway, I was hoping that someone would lead me in the right direction. Thanks all.
· Share on FacebookShare on Twitter

Comments

  • F1nut
    F1nut Posts: 50,552
    Constant static is quite possibly some or all of the semiconductors. They are the little black devices with 3 leads. Viewed from the top they are semi-circular having a flat side. If you see a black color on the leads the semiconductor is bad.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

    · Share on FacebookShare on Twitter
  • VSAT88
    VSAT88 Posts: 1,257
    F 1, I am going to look over the Semis. Thank you.
    Raging, I will consider a re cap however I am going to see if this unit will clean up well enough first, it was quite literally stored in a barn for no telling how long. Thank you.
    Nbrowser, as far as taking this to a Tech, in this area there are no reliable-trustworthy-Techs that would not charge more than I would be willing to pay. This unit may well be too far gone for me to continue with anyway. May just sell it and cut my losses. Thank you.
    · Share on FacebookShare on Twitter
  • VSAT88
    VSAT88 Posts: 1,257
    LORDY!
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,552
    edited January 2016
    WARNING: Do NOT use kerosene or degreaser on your electronics.
    Post edited by [Deleted User] on
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

    · Share on FacebookShare on Twitter
  • VSAT88
    VSAT88 Posts: 1,257
    Famous words of a Prophet, we will see. I have used 91% rubbing alcohol, ammonia, water, detergent, old english, lighter fluid, compressed air, an anti static / electronics vac. toothbrushes, q tips, deoxit and most probably many other products however I have never immersed any electronics in water. I have never used kerosene or gasoline or used WD-40 although I have found it useful as a cutting oil. My Dad used it occasionally for Piano actions, he has tuned and repaired Pianos for over 40 years, however..that is a totally different story.
    · Share on FacebookShare on Twitter
  • lightman1
    lightman1 Posts: 10,788
    Clean
    · Share on FacebookShare on Twitter
  • [Deleted User]
    [Deleted User] Posts: 10,716
    up
    · Share on FacebookShare on Twitter
  • notified
    notified Posts: 175
    edited January 2016
    Hate to state the obvious as you probably did it already,but from the inside[behind the faceplate] spray the vol. and balance pods with electronics parts spray cleaner,try to locate and spray inside the little hole that allows access to its innards,rotate the knobs all the way L/R repeatedly.It may take multiple applications to fully clean them after sitting so long,If this does clear the problem follow up with a electronic spray cleaner with lube to condition the rotary
    · Share on FacebookShare on Twitter
  • notified
    notified Posts: 175
    Curious,did you find the cause of the problem?
    · Share on FacebookShare on Twitter
  • VSAT88
    VSAT88 Posts: 1,257
    Have not got back on it yet. I will probably look around in there tomorrow. I won't forget to check back in. Thanks.
    · Share on FacebookShare on Twitter
  • VSAT88
    VSAT88 Posts: 1,257
    notified wrote: »
    Curious,did you find the cause of the problem?

    Still, thats right still have not put it on bench yet..
    · Share on FacebookShare on Twitter
  • sucks2beme
    sucks2beme Posts: 5,601
    I've had to spray controls 3 or 4 times to get rid of static.
    Also, if you have pre outs and power amp inputs, check them out.
    Some don't need jumpers, but that means there's contacts to get dirty.
    try using jumpers to see if that fixes it.
    The other thing is to use a light and magnifying glass to look for bad
    solder joints. Last thing to check is the speaker relay. You can use
    headphones, and if the static goes away, you'll have to clean the
    relay contacts.
    "The legitimate powers of government extend to such acts only as are injurious to others. But it does me no injury for my neighbour to say there are twenty gods, or no god. It neither picks my pocket nor breaks my leg." --Thomas Jefferson
    · Share on FacebookShare on Twitter
  • VSAT88
    VSAT88 Posts: 1,257
    sucks2beme wrote: »
    I've had to spray controls 3 or 4 times to get rid of static.
    Also, if you have pre outs and power amp inputs, check them out.
    Some don't need jumpers, but that means there's contacts to get dirty.
    try using jumpers to see if that fixes it.
    The other thing is to use a light and magnifying glass to look for bad
    solder joints. Last thing to check is the speaker relay. You can use
    headphones, and if the static goes away, you'll have to clean the
    relay contacts.

    I need to remember the basics. The above from sucks2beme is what I need to hear a lot of the time. I will heed that advice. Right now my Parasound is down so I am going to find the error there then I am going to finish the Phase Linear PL 400 I tore apart. My G 9000DB and Basic M2 work fine so I am good there. I am running the Dynaco ST70 on the SDA2'bs and the Kenwood M2 on the SDA SRS 2's so those are covered till I upgrade amps for the SRS speakers. Not gonna say what I am gonna use on these yet because I am not sure its gonna work out. I really appreciate you cats.
    · Share on FacebookShare on Twitter