logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda
3D printer for home or business?
3D printer for home or business? Here are the perfect 3D printers to start with »
ADVERTISEMENT
Dostępna jest polska wersja

Czy wolisz polską wersję strony elektroda?

Nie, dziękuję Przekieruj mnie tam

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

ScoTTwwo 19062 13
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
| New topic
  • #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 (1.7 MB)You must be logged in to download this attachment. Yamaha RX-V450 Receiver Not Turning On: DIY Repair, Power Supply & Condensator Issues DSC_07..JPG (988.29 kB)You must be logged in to download this attachment.
  • ADVERTISEMENT
  • #2 16760775
    miecho18
    IT specialist  
    Where did the idea about damaged capacitors come from?
  • ADVERTISEMENT
  • #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
    VIP Meritorious for electroda.pl  
    The probability that these capacitors is negligible. If anything, a serviceman would do it and the costs would be ridiculous.
  • ADVERTISEMENT
  • #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.
  • #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.
  • #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?
  • ADVERTISEMENT
  • #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.
| New topic
Report a violation of the law

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.
Generated by the language model.

FAQ

TL;DR: One documented fix: 1/1 RX‑V450 units in this thread revived after replacing a small capacitor; “replacement helped.” [Elektroda, ScoTTwwo, post #16781936]

Why it matters: This FAQ helps DIYers diagnose a no‑power Yamaha RX‑V450 and decide if a simple capacitor swap solves it.

Quick Facts

How do I fix a Yamaha RX‑V450 that won’t turn on?

In this case, replacing one small capacitor restored power. The thread author confirmed, “replacement helped.” Start by locating the capacitor marked 223k630 near the power supply, desolder it, and install a new 22 nF/630 V foil type. Verify polarity is not required for film caps. Reassemble and test. If symptoms persist, continue diagnostics. [Elektroda, ScoTTwwo, post #16781936]

What does the capacitor code 223k630 mean on this receiver?

It decodes to 22,000 pF (22 nF) with a tolerance around K, and a 630 V rating. One expert summarized it plainly: “This unfortunate capacitor is 22 nF / 630 V.” Use a film/foil capacitor with at least the same voltage rating. [Elektroda, dybas, post #16760926]

Is it really the capacitors, or should I test first?

Test first. A contributor cautioned that replacing parts blindly can waste time and money. Quote: “Need to measure… otherwise you can throw half the power supply out of the box and nothing will come of it.” Check capacitance and signs of leakage before ordering parts. [Elektroda, Piotr160292, post #16760776]

What meter do I need to check that 223k630 capacitor?

Use a universal multimeter with a capacitance range up to 20 μF. Desolder one lead (preferably remove the part) and measure. A good 22 nF capacitor should read near its nominal value, with about +15% tolerance considered acceptable. [Elektroda, zgzbyszek1, post #16761197]

Where is the failure located when both the power button and remote don’t start the unit?

The thread points to the power supply section. The author noted the front switch and remote could not start the receiver, which aligns with a standby or primary supply fault. Inspect and test the 223k630 capacitor found near the supply. [Elektroda, ScoTTwwo, post #16760822]

Can I use a slightly larger capacitance or higher voltage rating?

Yes. Advice given: ask for a “22 nano foil,” and using a slightly larger capacitance or higher voltage rating is fine. The key is a quality film capacitor and equal or higher voltage. “The cost is ridiculous,” so buy a couple spares. [Elektroda, Piotr160292, post #16760935]

What are the typical symptoms before total failure?

Early on, the receiver could be forced on by pressing the power button multiple times. Eventually it stopped turning on at all. This progression suggests a degrading component in the power path, consistent with a failing capacitor. [Elektroda, ScoTTwwo, post #16760745]

How much might a shop charge versus DIY?

In this case, a shop quoted 200 PLN for repair and charged 50 PLN for verification when the owner declined. DIY replacement of a single film capacitor costs far less and fixed the unit here. [Elektroda, ScoTTwwo, post #16760822]

What is a foil (film) capacitor in this context?

It’s a plastic-film dielectric capacitor often used in power supply timing, snubbing, or filtering. The advice here is to replace the 223k630 with a film unit of 22 nF and equal or higher voltage. Ask for a “22 nF foil” at the counter. [Elektroda, Piotr160292, post #16760857]

What quick checks should I do before ordering parts?

Visually inspect for cracks, scorching, or bulging. Desolder and measure the suspect capacitor’s value. Confirm the mains cable and power switch are OK. The original poster reported the cable and switch were fine, shifting focus to the power supply. [Elektroda, ScoTTwwo, post #16760822]

Do I need to match the exact 223k630 brand or suffix (e.g., “DI”)?

No. Match the electrical specs: 22 nF capacitance and 630 V or higher rating, film type. The code and brand suffix vary by manufacturer and are not critical for function in this repair. [Elektroda, dybas, post #16760926]

Can a failed 22 nF capacitor really immobilize the amplifier?

Yes. One contributor stated there’s “a very good chance that this capacitor immobilized the amplifier,” citing similar past cases. Small film caps in the supply can stop standby startup when they drift or open. [Elektroda, Piotr160292, post #16760839]

How do I test and replace the suspect capacitor? (3 steps)

  1. Desolder the capacitor marked 223k630 from the power-supply area.
  2. Measure capacitance with a meter up to 20 μF; compare to 22 nF with about +15% tolerance.
  3. If out of spec, install a new 22 nF/630 V film capacitor and retest power-on. [Elektroda, zgzbyszek1, post #16761197]

What if replacing the 22 nF cap doesn’t fix my unit?

Continue systematic diagnostics. As one expert warned, “Need to measure,” or you risk needless part swaps. Check other supply components and voltages. If you’re stuck, a shop may still be cost-effective compared to random replacements. [Elektroda, Piotr160292, post #16760776]

Any real-world confirmation that this specific swap works?

Yes. The thread owner returned after trying the swap: “Subject to close, condenser replacement helped.” That is a 100% success in this sample (1 of 1). [Elektroda, ScoTTwwo, post #16781936]
Generated by the language model.
ADVERTISEMENT