Re: No sound on one channel using RCA input
I took everything apart and did some testing then I reflowed the area I did work on and the issue is resolved somehow
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No sound on one channel using RCA input
Hi I'm trying to figure out what's the issue with this amplifier, Its a 2.1 channel system Dixon system (not a fan of this brand).
Issue:
-While using RCA or line in inputs the subwoofer plays and one of the speakers.
But if I connect via Bluetooth all speakers play fine.
I replaced the TDA7379 IC because it was previously blown with no sound at all.
Please if anyone can give some advice? and if you need more photos let me know?
Thanks...
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Re: Sony KLV-37S400A Weird Issues
Hi dskall
Its worth a try.
Thanks
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Re: Sony KLV-37S400A Weird Issues
Okay so I desoldered all the transformers and transistors and resoldered them all back(I also checked on the transformers if there are any broken connections and there are none, I put all the transistors in my component tester and they seem to test fine), now the TV stays on longer but still makes a clicking sound then a pop through the speakers and then off
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Re: Sony KLV-37S400A Weird Issues
Thanks R_J I will give that a try
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Re: LiteON PA-2911-1-LF Blown Components
Okay so I am still busy with this power supply I've decided to go with the TNY208 IC. I tested the caps and did find some with a high ESR value. I also missed the one smd cap that's connects to the bypass pin on the power switch IC. The cap is definitely blown. I should be okay with a 100nF ceramic cap right?...
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Sony KLV-37S400A Weird Issues
I have a Sony TV that after a few minutes it makes a pop sound through the speakers and then completely switches off and then powers back on by itself, the green LED goes out and then back on again. Since I replaced all the caps on the inverter and power supply its shutdown intervals are longer. I haven't replaced the main filter cap but now I'm just lost on what to do? I've tried resetting but no luck. Anyone know what else to do?...
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Re: LiteON PA-2911-1-LF Blown Components
Hi Momaka
Thanks for your reply, I will definitely try those things you mentioned.
I will keep you in the loop on the repair.
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LiteON PA-2911-1-LF Blown Components
I opened up a Cisco network switch that no longer powers on and the power supply has three blown components:
(See Photos Attached)
-Power switch IC
-Optocoupler
-Resistor
There are no blown fuses, mosfets, diodes. I know its impossible to ask what could cause this without physically looking at the board but does anybody know
what could have caused these components to blow?
Also finding a replacement power IC seems to be a bit of a mission as the top blew off and I cannot see the model of the IC. Can anyone help?...
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Re: New Members - please post your introductions here
Hi my name is Kyle, I am from South Africa.
I've been working in I.T for over 7 years but I decided to start my own repair business in electronics as its so much more satisfying, I still have lots to learn in this trade and that's why I am here.
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