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Woofer repair, turns on but no sound.
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Розмір відео:
- Опубліковано 18 сер 2024
- Repaired a von hotpoint mini woofer, turns on but no sound.
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These kinds of things we used to use in when i was in school in india now everything replaced with sound bar and high quality speakers . Good to see memories ❤❤
Ooh, here they are everywhere, we keep repairing them
@@emmanutechnician Good To hear
You have earned me as a new subscriber my king...i will learn from you...from Botswana
Thanks. Will be uploading more videos
Good job ..mine is both bluetooth and fm
Nice fix
Love the quality and the way yu explain
Where do u order component's like resistors, ics ,transformer etc
Town, luthuli and tiriki lane
Do they deliver
Hey man show us how to connect a 2.1 green board with mp3 Bluetooth module & transformer
Where I you located my woofer Amtec-006 has a problem
I have a woofer all ic are good ,but very little sound could it be capacitors
Not sure, probably the pre amp section, or low input signal
@@emmanutechnician pre amp ni side gani
Next time zoom the camera well so that we can clearly see what is on the board kindly.
Ooh, okay. I saw most parts were clearly visible when you adjust resolution to 720 or 1080p
Where do you diagnose next when the above method of audio input signal injection didn't work.
Even aftereplacing the output ic's TDA 2030 still there is no output or poor and weak sound, despite all input power parameters and woofer speaker being OK.
How does the bad green ceramic capacitors make the woofer behave.
Okay
1. If signal injection fails, directly the problem is on amplifier board. That's where we change the IC, but we first measure the one that was there, like Tda 2030, its easy to measure and know if its damaged.
You can also inspect the adjacent components if they are burnt or disfigured or amay have dry joints.
2. For weak and poor sound, I have datasheets, for each IC, and there is usually a manufacturer's schematic diagram. I use that to construct my circuit on a pcb board. Actually most components will be the ones on the initial motherboard, its just transplanting, but we also measure before use putting on that pcb.
3. Bad green ceramic, like the 224j, 104j, but some are brown not necessarily green. They are used to filter noise, stabilize voltages, etc, a bad ceramic won't do the above, so all noise, distortions, and unwanted frequencies will be passed to speakers, it will sound really bad, sometimes like a poshomill, or sparkling electric wires. Then you will have to change failed capacitor.
Actually when you hear any high distortion, capacitors are the first culprits.
@@emmanutechnician I put a capacitor on the bluetooth control module like the one you changed with above and the buzzing sound reduced but did not go away. The bluetooth is also bad, it plays in scratches after putting the capacitor.
Time for a new one 😮
Am trying to get time to resume audio content
Great job........ Whats the name of the interface
It's just mp3 Bluetooth player
What if my AMTEC woofer can only play on low volumes but pauses on high volumes?
Now that's tricky, if it's new school edition, it must be having a digital sound processor IC, I see it mostly in Sayona, it may mean you are pushing the woofer to maximum, that's why its overiding to prevent damage on the amp
Eeeeh buda....yangu hiyo usb/sd,aux ,na Bluetooth inafanya but hiyo bass haigongi....shida ni....inahumm hivi
Ulipata solution..myne too
Mine tweeters are working but the woofer inashtuka and bringing a buzz sound later rattling sound 😢how can I fix it
Most likely kuna dry joint mahali, ama loose component
Hae i have a 2.1 green board and nilitoa hio bluetooth yake nakareplace na kama hio bluetooth module umeweka kwa hio woofer but iko na background hissing
i have a von but it has a different problem. When i turn it on sometimes it turns on but has no sound then when i turn it off and on again a couple of times then the sound comes back on again but after some minutes i can't add or reduce the sound. What could be the problem?
Well, there is this IC called PT2313, I've seen it in sayona, i think also von uses it. Its the problem, it's a digital sound processor IC for bass, tremble, volume, tone, control, and it keeps failing. That's why the woofer will be going silent, it can be replaced though
Replace the ic
Also mine sound like heart beat
Was it replaced with new mp3?
@@emmanutechnician not yet
Not yet
How can we learn from you face to face???
I got some other work elsewhere, I became busy, only when I get time, I'll do Audio content
Hello mr
Hello
@@emmanutechnician number yako ya WhatsApp or email
Hae i have a 2.1 green board but it came with a bluetooth module sasa nikaamua kureplace na kama hio umeweka kwa woofer sasa after replacement ikakuwa na background noise.. what mighty be the problem...?
Kuna BT board zikona kelele na zingine hazina. Pia kuna njia unaeza try kufilter noises through capacitors
@@emmanutechnician Fundi, which capacitors filter the buzzing background noises?
Yo bro unapatikana wapi
Nko hizi sides za machakos, but nlipata shughuli zingine nkaachana na audio
Hello @@emmanutechnician
Hae i have a 2.1 green board and nilitoa hio bluetooth yake nakareplace na kama hio bluetooth module umeweka kwa hio woofer but iko na background hissing
The initial one, did it have background hissing?