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Fuse blowed on sony str av970 , need to buy fuse

Old 1980's

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: I have a Sony STR-D565 Receiver. I bought new

I resently hooked up my sony std d 565 reciever for 5.1 speakers and I keep hearing beeping, what is wrong?

Posted on May 01, 2009

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dunnbiker
  • 8546 Answers

SOURCE: I have a Sony STR DB930. Something happend and it

The fuse blowing is a symptom of something seriously shorted internally. What preceded the initial problem? Smoke is bad. Fire would be soon to follow without the fuse blowing. Take it to a tech.

Posted on Feb 09, 2010

  • 45 Answers

SOURCE: I got to replace 2 fuses from a sound board of a

If its the sound board both fuses are the same. but if they blew you may have a bigger problem like output transistors shorted. But try replacing fuses first if they blow again thats your problem. Good luck

Posted on Jun 02, 2010

smarthome2
  • 1114 Answers

SOURCE: sony str-de345 this keeps on blowing fuse

Disconnect all speakers at the receiver and test again. If it still blows a fuse, it needs a new power supply and needs to be serviced. If it does not blow the fuse, follow this:

The most common problem found on FixYa for Audio Video2_bing.gif Receiver's is:

My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire. To determine your exact problem, the first step is to disconnect all speaker wires "at your receiver" Next: Turn the receiver back on. If your receiver still says "protect" or turns off, it needs to be serviced. If your receiver stays on; reconnect your speakers one at a time and power back up after each speaker. You may find that after reconnecting all speaker wires it works! Most commonly the small braids of wire from the + to the - have touched and have caused the problem. In some instances, you noticed the problem only when turning the volume up. either way, make sure the exposed wires to your receiver are no longer than 1/2" long and are completely under the screw down terminal or slide in. When you've found the wire or speaker with the problem, your receiver will go back into "protect" At this point, disconnect the wire from the speaker at the speaker that may be causing the problem then test again.* Note* Make sure speaker wires do Not touch each other as this Will cause a short! If you turn the receiver back on and it stays on, you now know the problem is in your speaker itself. To test your speaker, you will need a multimeter. Set it to ohms resistance and touch the speaker terminals, if there is a short internally the meter will read "1......" If it's an analog meter, it will peg to the right. There's your problem. Now, within any speaker there are quite a few possibilities as to what could be causing the problem. Most common is a blown coil and the speaker needs to be replaced. Some speakers have internal crossovers (usually floor standing speakers) and may have a shorted or burnt board (usually very visible brown burn marks on the board) and can possibly be repaired if your handy with a soldering iron. Now, if you disconnect the speaker wire at the speaker and it still says "protect" Check your wire for the obvious cut or nail thru the wire if possible. If your system has wiring that runs behind walls, you may need to use your meter again. Disconnect the wire at both ends, keep the ends separated, put your meter on ohms resistance and touch probes to the + and - wires at one side. If the meter pegs to the right or reads "1...." the wire is shorted and needs to be replaced or repaired at the short. Hope this helps.


Posted on Jun 13, 2010

dunnbiker
  • 8546 Answers

SOURCE: fuse keeps poping, what other type of fuse can i

If it keeps blowing the rated fuse you really need to take it in to a shop for further analysis. Using an incorrect, higher value fuse will only raise the risk of fire or more damage to whatever is blown in the unit.

Posted on Dec 09, 2010

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1 Answer

Sony receiver keeps blowing 5 amp fuses


You have shorted output transistors in the amp that need to be replaced.

Feb 14, 2013 | Sony STR-DE425 Receiver

1 Answer

Fuse keeps poping, what other type of fuse can i buy for this, my model is STR-DE435 (sony)


If it keeps blowing the rated fuse you really need to take it in to a shop for further analysis. Using an incorrect, higher value fuse will only raise the risk of fire or more damage to whatever is blown in the unit.

Dec 08, 2010 | Sony STR-DE345 Receiver

1 Answer

In my tv fuse is blowing off immediately


Hello
If fuse blows off immediately, i means that there is a short circuit occured in your telivision. This can mainly due to some diodes or regulators inside your tv. An overvoltage, spikes, ie [sudden high rise and go low], in the supply votage in your home, could damage power supply regulator components inside your tv.
All Sony Tvs has high accuracy power regulating systems inside. It is an onboard assembly, usually take 1/4th of the area of the TV. In older Sony TVs, this section was built in with use of transistors of different types. But your tv is not so old, so its power supply system is built with an STR, an Ic meant only for power regulations. Normally it willb numbered STR S6707, STR S6703 etc; according th the working voltage of the main board, and screen size of the TV.
This STR may get shorted due to power fluctuations, or any other reasons. A I mentioned above this is an Ic look like small squuare biscut of about an inch in square, and will be black in colour.
The rectified main power supply is given to it via an SMPS transformer [Swiched Mode Transformer], and the Ic will swictch it on and off at the rate of sbout 25KHz or more, and this transformeres secondary voltage is used to power up the other part of the ciiruit board.
If the fuse is blowing as soon as the set is switched on, this Ic will be faulty [Shorted inside]. If you put an another fuse, it also will blow up due to short. It is not good to play with power supply system by doing this as it may harm to other components also.
You have done it I thinks. Here in India, we gets 220VAC as home power supply. Sony TVs used here have a fuse rateing of 250V 3.5Amps. If your household supply system voltage is also this you must put only this rated fuse. If it is 110 or 120VAC, the fuse rating may differ; and will go upto 6 to7 Amps. More than this rated fuse should not be used.
You just do one thing. Just open the back cover of the TV, locate the power regulator section, and chech whether any main rectifier diodes for leak. There may four of them. In some sony Tvs, rectifier stalks are used. Check it for leak. If thery are all good, measure the resistance across the main filter capacitor with a multimeter set in Ohms range. If the STR said above is short, the meter will give full scale deflection. Unsoder the STR and pick it out after loosing its fixing screws to the heat sink. Again check the resistance accross the main filter capacitor. It must sho a low deflection or no deflection at all. Never replace the STR with a new one as there may be some other faulty components in that section. Usually when STR fails, there are some Zener diodes, Wire wound resistor etc will also gets shrted. If you replce the STR before checking them for fault, the STR you puts in will get shorted as you swich on the set. It will take just 1/100 part of a second.
So check all the components related with power regulator system, and then only repace the regulator. Caution: Keep chlidren away from you while you open the tv. Never touch any part of the circuit board while power supply is there. Plug out from the wall socket each time you touch the printed circuit board. As your Tv screen size is 32", an approximate of 25KVDC [15,000VDC], will be present at the first anode of the picture tube while it is working. It is too dagerous to contact.
If you haven't through knoledge, skill and patience, never try to repair it. If you knows to follow its schematic digram, buy one book and follow the circuit.
Keep an adult beside you as you try to repair your set, as a precaution.
If you have any doubt, report to Fixya, they will give me alert. Ok

Oct 20, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

I got to replace 2 fuses from a sound board of a reciever Sony STR-DE935 but I lost the old one and now I don't Know how many Amp and volts should I buy to replace it .where I can get it?


If its the sound board both fuses are the same. but if they blew you may have a bigger problem like output transistors shorted. But try replacing fuses first if they blow again thats your problem. Good luck

Jun 02, 2010 | Sony STR-DE935

1 Answer

I have a Sony STR DB930. Something happend and it


The fuse blowing is a symptom of something seriously shorted internally. What preceded the initial problem? Smoke is bad. Fire would be soon to follow without the fuse blowing. Take it to a tech.

Feb 08, 2010 | Sony STR-DB930 Receiver

1 Answer

What fuses does the sony str-de535 need


I beleive it is a 6.3amp gma. It will be printed on the circuit board next to the fuse holder and on the fuse itself. If it is open(blown) you probably will need to replace a set of the output transisters (mp1620 and mn2488). DO NOT use a slow-blow fuse this will cause more damage to your receiver.

Oct 21, 2009 | Sony STR-DE535 Receiver

2 Answers

Sony STR-D565 fuse continues to blow


You could have a shorted winding in the power transformer. The diodes in the power supply can be shorted. Filter capacitors can short and send power to ground which will blow the fuse.

Apr 16, 2017 | Sony STR-D565 Receiver

1 Answer

I have a Sony STR-D565 Receiver. I bought new


I resently hooked up my sony std d 565 reciever for 5.1 speakers and I keep hearing beeping, what is wrong?

Apr 04, 2009 | Sony STR-D565 Receiver

3 Answers

Sony str-de845 Powers up, relay clicks, fuses BLOW!


This condition, may be produced by defective components (Q506, Q507). you can remove those transistor, replace the fuses, power-on and wait for relays click. if the fuses not blown again, them replace both transistor.

Mar 05, 2009 | Sony STR-DE845 Receiver

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