Mackie SRM450 Active Speaker, Tips to know how to Repair partially dead amplifier board.

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In this video I have shared
Mackie SRM450 Active Speaker, Tips to know how to Repair Partially Dead Amplifier board.
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As we have already repaired 10+ faulty pieces of my RU-vid family members. If you want to repair your faulty device you can contact on the mentioned contact details in the video.
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#mackie #srm450 #repair #faulty #tipstorepair
#howtorepair #learnwithtkfelectronics #tkfelectronics

Опубликовано:

16 окт 2024

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Комментарии : 42

@PowerToneAudio 2 года назад

nice, straight forward repair , still lucky because the IC chip driver of the 2 mosfets survived, normally when the FEts shorted it damage the chip as well. and for safety purpose you should have check first if the power is turning ON, check if DC voltage coming out from the speaker terminals before fixing it to the speaker box and making audio test. It might burn the speakers if DC voltage is present on the speaker board terminal , as i say safety first but anyway nice repair .

@TKFElectronics 2 года назад

Thanx bro

@crisfiler6128 Год назад

Hi my pair of 450 s(Italian mk1) one is hissy when nothing plugged into it and the other the bass is distorted (driver checked ok) Any idea of problems?

@supersilve Год назад

You are lucky as usually when mosfets blow they burn the gate resistors and also the mosfet driver chip. Having such a strait forward repair made it rather easy.

@TKFElectronics Год назад

I am not lucky bro customer is lucky as he don't have to spend more money.

@datomkheidze9774 10 месяцев назад

Hello bro, srm 450 v1, noise from HF speaker when nothing plugged. Problem is from amplifier. What is about price for this problem?

@NGL_652 6 месяцев назад

Sir...mere pass mackie srm450v2 active speaker hai...usko power on krtehi thermal signal wala light blow krta hai..kya problem hua hoga sir plzz reply🙏

@manselima8641 Месяц назад

Alo sou de Cabo verde tenho um problema igual quero ajuda por favor

@NGL_652 5 месяцев назад

Sir...yeh speaker mobile se chalane k liye xlr to 3.5 mm jack chahiye na???? Balanced ya un balanced?

@TKFElectronics 5 месяцев назад

Just Ep to XLR chahiye

@NGL_652 5 месяцев назад

@@TKFElectronics thank you

@dhakaboy1 2 года назад

So, all I need is a Voltmeter, and screwdriver and the parts correct ? During testingI could not see which terminals you are connecting to, I am not an electronic engineer. Also, during testing, is the power completely off, or at one time it has to be on ? I am not sure.

@TKFElectronics 2 года назад

Thank you for watching my video sir, I am sorry that u r not able to view clearly testing points, actually I recommend if you are not qualified technical person pls do not attempt to repair it sir, & by the way during testing voltages unit must be in ON condition where as during testing ohmic test unit must be in OFF position. But most importantly is always check any Malfunctioning Power supply board in series.Do not connect directly to Main AC power.

@Koflex Год назад

Can the whole board be replaced if the repair is not successful? I think mine is damaged beyond repair. And where can I find the replacement?

@TKFElectronics Год назад

Better buy new system only instead of thinking of replacing whole main Board

@raybin6873 2 года назад

Should've put heatsink compound on MOSFETs to heatsink surface to assure adequate cooling.

@TKFElectronics 2 года назад

It would be more better if you use heat sink compound for every high Temperature components.

@chandrashekharkshirsagar4418 Год назад

Sir, my srm 450 v2 active sound reinforcement system is giving shrill on turning "signal present" knob. One of the engineer changed the potentiometer with 6pin in line 50k value (available in the market) but the problem is not fixed. As per schematic it should be 10k potentiometer. Can you make it available or suggest me a shop where I can get it at Pune.

@TKFElectronics Год назад

10k pot is very commonly available in any electronic Market & i am sure in Pune also available

@chandrashekharkshirsagar4418 Год назад

Only 50k and 100k pot are available in nearby pimpri market.

@TKFElectronics Год назад

See Replacing 10k pot or 50k, doesn't matter much, if still your problem not solved it mean something else is their Bro

@chandrashekharkshirsagar4418 Год назад

Thanks you sir so much for your guidance and sparing time to solve the problem. I am trying to get 10k pot. On getting will try. If still the problem of shrill exist, i will contact you for further guidance. Sir I wish to know from where you belongs.

@TKFElectronics Год назад

Thanks for your compliments I am from Mumbai.

@fredflintstone2077 7 месяцев назад

Two of the large mains filter caps were knackered. Tops bulging right out. Should have changed them whilst it was apart as a precaution..

@Tronzoid 6 месяцев назад

I have a couple mackie powered speakers with the same capacitors. They have a black plastic top that make the tops look deceptively bulge-y even when they're good. Not saying definitevely that they aren't messed up, but impossible to tell from sight alone.

@fredflintstone2077 6 месяцев назад

@@Tronzoid They don't bulge when new. As they start to fail they pressurise inside which results in the bulge. Eventually they will fail. It could be years or they could go "pop" tomorrow. They are designed to bulge so the eventual "pop" will be a lot less. Most of them have weak points built in to let the pressure escape once it reaches a certain level. This avoids a much bigger bang.

@fredflintstone2077 6 месяцев назад

@@Tronzoid One of my Mackie's has 6 large filter caps and four are bulging but it is still working fine. I'll change them at the next service.

@fclightsandsoundvlog5175 Год назад

My srm450v2 have power but totally dead i change mosfet ic and mosfet but no sound icheck tha gate voltage and bypass the mute but no sound what i will do

@TKFElectronics Год назад

After replacing MOSFET ic & MOSFET with new, still SMPS power supply is not getting ON