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Yamaha RX-V450 Receiver Not Turning On: DIY Repair, Power Supply & Condensator Issues

ScoTTwwo 16779 13
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16760745
    ScoTTwwo
    Level 7  
    Hello.
    I am new to the forum and have little knowledge about receivers.
    Due to the fact that I gave my receiver to "repair", which I gave up (in my opinion it was unprofitable) I decided to do the repair myself.
    Referring to the topic I am looking for matching condoms n sator about to the receiver's power supply because they are probably damaged. The receiver does not turn on at all, before I was able to turn it on by clicking the "power" button several times. In my city, unfortunately, I will not buy such an account n sator about in, I also thought about AND llegro.
    Here power supply from the inside:
    Yamaha RX-V450 Receiver Not Turning On: DIY Repair, Power Supply & Condensator Issues DSC_07..JPG Download (1.7 MB) Yamaha RX-V450 Receiver Not Turning On: DIY Repair, Power Supply & Condensator Issues DSC_07..JPG Download (988.29 kB)
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  • #2 16760775
    miecho18
    IT specialist  
    Where did the idea about damaged capacitors come from?
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  • #3 16760776
    Piotr160292
    Level 38  
    Insert one larger stitch. Nothing bad will happen and filtration will be a plus. Probably not enough to qualify parts for replacement. Need to measure, spr. Is there any traces of unsealing and only if necessary replace because you can throw half the power supply out of the box and nothing will come of it.
  • #4 16760782
    nici
    Moderator Chiptuning  
    The probability that these capacitors is negligible. If anything, a serviceman would do it and the costs would be ridiculous.
  • #5 16760822
    ScoTTwwo
    Level 7  
    I read that probably a 223k630 DI condenser may be the reason, I wanted to order and check out of curiosity if it works, but I could not find it in Polish stores after this marking, so I set up the topic. As for the power cable, it is OK, the switch is also not damaged, because the remote control also cannot be started.

    Added after 6 [minutes]:

    nici wrote:
    The probability that these capacitors is negligible. If anything, a serviceman would do it and the costs would be ridiculous.

    The cost was to be PLN 200 and he only told me that the power supply was damaged and had to fix something in it.
    Due to the fact that I received it, I had to pay PLN 50 for "verification".
  • Helpful post
    #6 16760839
    Piotr160292
    Level 38  
    Geez, after all, is a more common foal 220, probably nano farads. Don't fart that there is none, because this is the basic assortment of every store. Desolder this capacitor on the pattern. And with your hand, you'll be in the first store. Yes, there is a very good chance that this capacitor immobilized the amplifier. I have already encountered such a case.
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  • #7 16760849
    ScoTTwwo
    Level 7  
    Piotr160292 wrote:
    Take a clear picture. I do not believe that it is impossible to replace this condenser

    I don't know exactly what is broken, but I suspected the condenser reading other topics and wanted to order it, the problem appeared in search of it - I entered "223k630 DI" in Google and found it only in foreign stores. That's why I thought that maybe there is a replacement or you just have to enter the capacitor designation differently.

    Added after 2 [minutes]:

    Piotr160292 wrote:
    Geez, after all, is a more common foal 220, probably nano farads. Don't fart that there is none, because this is the basic assortment of every store. Desolder this capacitor on the pattern. And with your hand, you'll be in the first store.

    The problem is that I showed a photo of the condenser, he searched, searched and did not find, and this is the only such store in my city.
  • #8 16760857
    Piotr160292
    Level 38  
    Well, I'm writing this is a foil capacitor. Enter google ceramic capacitor designations and everything will be clear. Replace any philosophy because every single foil with this capacity or a bit larger and voltage.
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  • #9 16760866
    ScoTTwwo
    Level 7  
    Piotr160292 wrote:
    Well, I'm writing this is a foil capacitor. Enter google ceramic capacitor designations and everything will be clear. Replace any philosophy because every single foil with this capacity or a bit larger and voltage.

    And that was what I meant, but since the users above think that this is not the reason for the condenser, then let's start from the basics.
    How should you check such a capacitor? Desolder it and check it with a meter? How should the meter be set and what should they show if it is functional?

    Added after 26 [minutes]:

    Piotr160292 wrote:
    Well, I'm writing this is a foil capacitor. Enter google ceramic capacitor designations and everything will be clear. Replace any philosophy because every single foil with this capacity or a bit larger and voltage.


    To be sure, if I understood correctly, the capacitor will be marked 22nf 630V?
  • #10 16760926
    dybas
    Level 38  
    A capacity meter will be needed. This unfortunate capacitor is 22 nF / 630 V.
  • #11 16760935
    Piotr160292
    Level 38  
    Well, or 22 nano. Nevertheless, you don't have to search. Just say you want 22nano foil and I guarantee you will get it. If not so it is a bit bigger ...
    The cost is ridiculous, you can swap it for a horse. It may be almost because I saw on the eevblog video blog how the guy brought this jamaha from hasioka, exchanged the foil and started ... He was shocked himself because the people told him and said that he would not have lost the foil capacity.
  • #12 16760961
    ScoTTwwo
    Level 7  
    dybas wrote:
    A capacity meter will be needed. This unfortunate capacitor is 22 nF / 630 V.


    And how to check it more carefully? Desolder and then how should the meter be set up? What should it show if it was in working order?
  • #13 16761197
    zgzbyszek1
    Level 10  
    The universal meter with capacitance measurement up to 20 mikoF is enough, it should show the capacity like on a + 15% capacitor, and you will see if it is good.
  • #14 16781936
    ScoTTwwo
    Level 7  
    Subject to close, condenser replacement helped.
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Topic summary

The discussion revolves around a Yamaha RX-V450 receiver that is not turning on, with the user suspecting damaged capacitors in the power supply. Initial responses question the likelihood of capacitor failure, suggesting that a serviceman would typically handle such repairs. The user mentions a specific capacitor, the 223k630 DI, which they cannot find locally. Other participants recommend checking and potentially replacing capacitors, specifically a 22nF/630V foil capacitor, which is common and should be available in local stores. They discuss methods for testing capacitors using a multimeter and confirm that replacing the faulty capacitor resolved the issue.
Summary generated by the language model.
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