BN41-01526A – Sound IC TAS5715 Reset Solution
in Samsung LA32C450E1 TV No Sound Fix The main board of this LED TV was in a dead condition; I replaced it, but the replaced board had a sound problem—its sound sometimes came and remained silent for most of the time. This main board had an audio amplifier IC TAS5715 installed. I tested its VCC, etc., voltages; all were present. How to solve this fault In this article, we will guide you step by step in complete detail.
Sound IC TAS5715 Reset Solution
The reset pin 25 of the TAS5715 IC that is associated with the system IC is the voltage level 3.3 voltages go from low level to up level once and then stay at a constant high level. When I took the voltage reading here, the problem was here. I traced the pin so it was going to the PCB hole, and doing the disconnect is shown on the other side of the PCB by marking it in the pictures below. Actually, this error was inside the PCB.
BN41-01526A Sound Fault Fix
I have the pin number 25 of the audio amplifier. When I traced it, it was going under an eight-pin IC. I separated this IC from the circuit and saw this track. It was going to the other side of the PCB. I scratched it and measured its resistor with a multimeter. When I checked, I found a high-value resistor here, while it should have been a 20-ohm resistor. I bypassed this track and installed the main board and turned on the set, and then the sound started coming out.
- Samsung Dead Fault.
- The original main board has not been repaired.
- The second Samsung board installed was a version difference.
- This board had a sound problem.
- There was a reset problem in the TAS5715 audio amplifier circuit.
- Audio amplifier IC pin number twenty-five: System IC malfunction causes PCB hole disconnect.
- Bypassing pin number 25 made the reset circuit work properly, and the fault was fixed.
My experience with this fault
Since this is a fairly old model LCD, it is not surprising that a fault occurs in the PCB of such a main board. I have solved such faults before. All you need is dedication. If you do fault finding with hard work and dedication, there is no reason why you cannot reach the fault. If you work keeping the circuit theory in mind, you can solve such complex faults. Sony LED TV Repair Center Lahore Publish original fault-finding articles for you.
Conclusion
Samsung LA32C450E1 TV No Sound Fix You see, we installed a second mainboard in this model and then diagnosed and resolved the fault in the audio section of this board. The picture was perfectly fine, but sometimes the sound came and sometimes it didn’t. This problem was related to the reset section of the audio amplifier IC. The reset pin of the audio amplifier was not communicating properly with the system IC. The reason was a PCB hole disconnect, which was bypassed, and the fault was fixed.
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Shaukat Ali has over 30 years of experience in LED TV repair, specializing in chip-level repair work. He is an expert in Sony LED TVs, and also repairs other major brands like Samsung, TCL, Orient, and Haier. His expertise includes display panel faults, motherboard issues, power supply circuits, T-Con, and HDMI faults. Based in Lahore, he shares real-time fault finding cases from daily repair work to help technicians and learners with practical experience.
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