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Power supply gows up and down (tda4605) model vt 2040f

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Normally Grundig tv sets when stop working the standby light is on. If it is so the power supply is faulty. You should check DC supply voltage in pin 6 of SMPS IC TDA4605.. If no voltage in this pin, check the limiting resistor connected in series. If these parts are OK, check the supply line rectifier diode for short.


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How can I tell if my VT-300ATX power supply is bad?


Short black and green wire the smps fan will start ,For details click bellow the link,

Let me know if you need more information

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Gow do register online?

Find out the manufacturer or brand, model and serial number of the microwave. Google the brand name and then navigate to the manufacturer's web site. Look for something like "register product", "customer care" or "owners" and click on it. You should be prompted to supply your name, address, date of purchase, model, serial number and probably even more. Generally, you'll only have to divulge the info listed above to register - but some sites may be a little pushy for info like household income, etc. If you'd rather not supply that - skip it. If you aren't able to submit due to the site balking at missing info - then you'll have to fill out the registration card that came with the microwave (but only put down the info you're willing to provide) and mail it in. Done.

Please rate this reply - thanks!

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1 Answer

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I suggest you look at the Horizontal output transistor, when it goes short the supply is in protection mode, it is pointless reading voltages at this stage, check the transistor located close to the Horizontal output (Flyback) transformer and normally mounted on a large heatsink. Check the caps in the primary power supply stage....hope that helps..Phil

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Your ps2 needs to be fixed, gow 1 and 2 are dual layered discs and alot of ps2 originals and slims have trouble playing it, trying calling sony and they can usually fix it for about $45, the laser in your ps2 is worn.  Hope this helps :)

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No power to my legacy 600 watt car amp

Hmm...ive had this problem before and its always been either the remote wire, the rca cables or the ground. i would try hooking up the remote wire strait to the battery, if that doesnt work try to find a better place for the ground. maybe where your trunk latches. if that still doesnt work then i would try new rca cables.

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No power on my VT-300ATX powersupply

If you're trying to just plug in the wall power cablem without connecting the motherboard it will not work. Switching power supplies need to detect a load (device) otherwise they will not put out power. Safety feature.....

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