Rotel rb990bx heating up unevenly

EDUBAG
EDUBAG Posts: 403
edited June 2014 in Electronics
Hello everybody,

i was just curious that my rotel rb990bx power amp heat more from the right side than the left. It still sounds great and evenly on both speakers (rtia7) but for sure the right side on top of the amp is hotter than the left.

Anybody familiar with rotel could tell me if this is normal, in case it is not what can be the cause and what can be done to fix it.

Regards,

eduardo
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Comments

  • F1nut
    F1nut Posts: 50,566
    edited August 2010
    The bias needs adjustment. You can't do it, so take it to an audio tech or send it in to Rotel.
    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

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  • lightman1
    lightman1 Posts: 10,788
    edited August 2010
    Turn it upside down to even out the heat......:confused:
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  • hifiuser
    hifiuser Posts: 3
    edited June 2014
    Hi Edwardo & everybody on forum ,

    i've recently noticed that my loved one power amp Rotel RB-990bx heats up more from the right side as well than the left.

    Did you try to fix yrs Edwardo since you had experienced same issue // was the problem a bias adjustment or else ? Is it easy to be done if have a service manual in hand..? (I have it!)

    Thanks in advance to all of you that can come up with an answer to my problem..

    Regards,
    Emmanuel
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  • hifiuser
    hifiuser Posts: 3
    edited June 2014
    Hi dear & thanks for getting back to me.. I might try do it myself.. I have some tools & will read serv.manual..

    Lets say suppose has an amp with same issue(bias adj.) but wont notice it so amp stays that way , is that dangerous ?

    Best regards,
    Emmanuel


    Rotel RB990BX
    Rotel RB993
    Adcom GFA5802
    Alexander pream -Tsakirides devices
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  • hifiuser
    hifiuser Posts: 3
    edited June 2014
    nbrowser wrote: »
    Do you happen to have an ultra sensitive digital volt/ohm meter? A pair of mean nothing elcheapo if they blow they blow speakers handy ? Are you comfortable working around high capacitance parts that could actually kill you if you make the wrong move inside a working piece of electronics ?

    Hi dear ,

    Well , I have some skills on electronics & own some tools .. also a voltmeter but not a digital one.. I should get one..
    Those beefy capacitors are rated / 80v 15000mf each ... I will read tech manual & will update..

    Thanks for yr attention & advise buddy , much appreciated !!

    Advance acoustics mcd II
    Mirage OM10
    Mirage OM200
    Rotel RB990BX
    Rotel RB993
    Adcom GFA 5802
    Alexander preamp
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