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  • Ameritron 811H

    From Phil@pdl@imaginenet.net to alt.ham-radio.hf on Fri Sep 9 16:29:33 2011
    From Newsgroup: alt.ham-radio.hf

    Hello , wondering if anybody has had problems with the Ameritron 811H amp. , the unit I am speaking of has been down two times in 18 mo. , first was
    under warranty and am currently replacing the high volt. electro. caps. and
    a 50 K bleeder resistor , looks like the 50K was out of tolerance by about 100K and must have caused a electro. cap failure , the unit seems to be very popular and am wondering if there are any others with similar failures ,
    from new to two major repairs in 18 mo. seems excessive , Thanks , Phil L.


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  • From dave@dave@dave.dave to alt.ham-radio.hf on Sat Sep 10 13:01:14 2011
    From Newsgroup: alt.ham-radio.hf

    Phil wrote:

    Hello , wondering if anybody has had problems with the Ameritron 811H amp. , the unit I am speaking of has been down two times in 18 mo. , first was under warranty and am currently replacing the high volt. electro. caps. and a 50 K bleeder resistor , looks like the 50K was out of tolerance by about 100K and must have caused a electro. cap failure , the unit seems to be very popular and am wondering if there are any others with similar failures , from new to two major repairs in 18 mo. seems excessive , Thanks , Phil L.


    The bleeder resistor is a safety feature. 150K v 50k just means it'll
    take a few more milliseconds to drain the filter cap. It should not
    cause a failure.
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  • From Stanley M Miln@k6rmr@dslextreme.com to alt.ham-radio.hf on Thu Feb 23 22:09:25 2012
    From Newsgroup: alt.ham-radio.hf

    The Biggest failure I have heard is with the relay.
    Stan K6RMR
    Hello , wondering if anybody has had problems with the Ameritron 811H
    amp. ,
    the unit I am speaking of has been down two times in 18 mo. , first was
    under warranty and am currently replacing the high volt. electro. caps.
    and
    a 50 K bleeder resistor , looks like the 50K was out of tolerance by
    about
    100K and must have caused a electro. cap failure , the unit seems to be
    very
    popular and am wondering if there are any others with similar failures ,
    from new to two major repairs in 18 mo. seems excessive , Thanks , Phil
    L.


    The bleeder resistor is a safety feature. 150K v 50k just means it'll
    take a few more milliseconds to drain the filter cap. It should not
    cause a failure.


    --- Synchronet 3.21b-Linux NewsLink 1.2