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Sanyo DS19350 12 volt relay buzzes continually, relay has approx 350 ohms resistance but voltage is 53 volts do not have any info on step down resistor

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Hi,

This is a known issue with this particular brand/model. I am assuming that you are familiar with electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

The relay is typ[e DH1U 12VDC (RL001). Result is mechanical buzzing sound, no picture and no sound. Often, fault is an open/leaky capacitor 470uF/25V (C022), test and replace.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Sep 08, 2008

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If even one is bad (they protect the source voltages to the chips) the set will detect no voltage to the chips and shut down=3 blink code.

If this is found both chips will have to be replaced and set adjusted---I can if this is the case tell you the best way to get at them and replace them--also the chips are very cheap---total parts cost for this type of repair is under 30 dollars.

Use a meter if none appear discolored (it will be slight discoloration and only on the 2.2 ohm resistors which have the value printed on them.

This set like others uses 2 voltages in the 20-30 volt range going to those resistors----one is a positive voltage and the other a negative voltage---either missing and set shuts down.

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Hello,
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