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

Replace the main board. It will be the best. Electro help

Some have the Power On/Off button on the top right. some others have the switch on the back. Press the Power button umtil the device powers down.

Hi
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.

Sully

Hi,


Short black and green wire the smps fan will start ,For details click bellow the link,
http://www.playtool.com/pages/psuconnectors/connectors.html#4into8

Let me know if you need more information
Thanks

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.

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100k ground from ic pin replece 3 electrolytic cap . Adjust preset for 95v if it isphilips tv

Its your Idle rev limiter, i had the same problem. go to any auto parts store and you can get one. its a common problem in hondas and acuras.

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

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.

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.....