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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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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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PT-56WX53 comes on with picture and color for 5 seconds then shuts off, 3 blinks every 5 seconds

3 blinks is error code for short protection---rare for set to even make it on with this issue. (another popular error is 5 blinks which is a short on the 140 vdc line but that is not your issue)

95 percent of the time this is a convergence problem---here is what to look for: Locate the two STK-392-110 CHIPS this set uses (hard to miss) and carefully inspect the blue resistors directly in front of them--you are looking for any of the 2.2 ohm that are either open or slightly discolored in the middle.

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.

Let me know if you need the info about getting at them--a email address given will result in a copy of my own instructions for this repair as I have done hundreds of them.


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Sanyo Ds19350 television 12 volt relay

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Sound works but picture went out.

First check that any muting control is not activated. This might be a button on the remote or set itself. If you have a headphone jack, it may have dirty contacts as plugging in a headphone usually mutes the speaker.

If the set is mono or only one channel of a stereo set is out, then check for bad connections to the loudspeaker. Test the loudspeaker by disconnecting one of the wires (with the power off!) and measuring its resistance with an ohmmeter (it should be less than 100 ohms - probably less than 8 ohms). Or momentarily touch a 1.5 volt battery to the speaker terminals - you should get a click or pop from the speaker.

Next, trace back from the speaker output terminals to the circuit board and look for bad solder connections or a loose or dirty connector.

If these tests do not reveal anything, you probably need a scope (or audio signal tracer) and schematic. Or at least the part number off of the chip. Is the final amp a chip also or just a transistor? Have you tested the transistor? If there is little or no buzz from the speaker, that would indicate a problem fairly near the output. If the tuner/if were bad, I would expect some noise/humm pickup from the low level audio stages. Get the part number off of the chip. If it is in a socket, check the contacts for corrosion or looseness.
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Have a Toshiba TP50G50 Projection televison with no picture. Have 100 volts to power board

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It's probably cap related... The +/- 30 or 12 volt lines feeding the tuner could be disrupted if a high esr cap is failing... ESR stand for equivilent series resistance and when a cap like that begins to fail it takes longer and longer to warm-up to its peak or in your case heats up beyond it's tolerance and fails to dissipate voltage at a correct rate affecting the circuit its in - in this case the tuner.
Not normally an expensive job but not one I'd want to do in-home. Good chance the tech will need to trace test the circuit with a scope anf ESR meter. Kinda like tearing an engine down to it's basic components if you know what I mean. You're better off taking the unit to them, saving the pickup delivery charges, and as always get an estimate in writing before any repairs are made over your okay amount...
Have a great day!

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