Question about Inverter Pure Sine Wave 1500w Inverter

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My sukam 800 VA inverter is dead

IC 7805 & IC 7812 were blown, replaced,but it is still not working and gives continuous buzzer as soon as the battery is connected. The inverter uses IC PIC 16F78. I replaced crystal also.

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  • Anonymous Mar 25, 2014

    I installed SuKam Falcon Inverter.
    Main On Keeps blinking and Battery is not getting charged.



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Dear customer,

We are extremely sorry that you have been inconvenienced through a Su-kam product. However, we pride ourselves on prompt and effective customer service. Please provide us with your name, contact number and address. Please give us the complaint number and date as well and we assure you to look into the matter at the earliest. Mail us at, We would do our best to resolve your grievance at the earliest.
Hoping to hear from you soon.

Su-kam Executive

Posted on Jul 20, 2010

  • SukamExec Jul 27, 2010

    Dear customer,

    We haven’t heard back from you as
    yet. We again kindly request you to provide us with your name, contact number and
    address along with complaint number and date. Mail us at would look into
    the matter immediately and get it resolved as soon as possible. We care for our
    customers and want to provide the best services to them.

    Su-kam Executive

  • SukamExec Jul 30, 2010

    Dear customer,

    This is in reference to your complaint/grievance regarding
    Su-Kam and its products. The modus and manner in which the same has been done
    is neither correct not appropriate. Without prejudice to its rights and
    contentions, Su-Kam had requested your good self to provide the necessary
    details and information to substantiate your claim/complaint so that the best
    possible assistance is provided to your goodself from Su-Kam. Despite of the
    same till time you have not been able to provide the same to back up your
    complaint/grievance. Your non co - operation will leave us with no option but
    to consider your complaint/grievance as false, motivated and exaggerated. Your
    goodself must be aware that any information/claim, which is wrong and
    motivated, is published on the net for public viewing and which could not be
    substantiated with proper documents and information causes serious damages to the
    reputation and goodwill of the company and also maligns and defame the overall
    image of the company, its officials and its products. All this besides being
    civil wrong may even amount to criminal offense and in those cases the company
    has every right to institute appropriate legal proceedings against that wrong
    doer. We hereby finally request you to provide all the information, documents
    and details pertaining to your complaint/grievance within the reasonable
    period. Needless to say that in case the required information/details/documents
    are not being provided, your so called complaint/grievance is nothing but
    false, motivated and malafide.

    Su-kam Executive


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If the regulating circuits 78xx had blown it means that the input voltage which may be 18 - 35 VDC has been fed to all ICs. Some of them or all may have burnt. I did not understand which crystal did you change (the 2 - 20 MHz Quartz may be), but I think that rather the PIC was damaged.

If you have Oscilloscope on hand, check the oscillations on PICs clock.

Posted on Jul 18, 2010


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