[Solved] LG 32LH500D TV - ZD9108 Diode Replacement in 715G7801 Power Supply After Overvoltage

Hello.

TV as in the subject.
Panel: TPT315B5
Power supply + driver: 715G7801
Main: 715G8003
Tcon: 6871L-4445

TV after overvoltage in the network - I need information about the diode in the power supply marked: ZD9108, diode shorted. The power supply is based on the SSC3S121 system.

The Philips-40PFT6709 on the chassis: TPM14-2A-LA is the power supply on the SSC3s121



There is no ZD9108 zener diode in approx. SSC3121

There is no such element in the diagram, but in my case the diode is connected in parallel to the R9101 with the cathode to the source.

Once upon a time, companies used "myk" in the form of:
- zener diode, connected in parallel to the resistor in the field current sensor
There was even something on the forum .....

you have to search the resources
e.g.

So the TV works. I decided to take a chance - there is a 3.3V diode in the fox diagram with a 0.56 ohm resistor, in the power supply for the 43LH5000 model, the schematic diagram of which is in the base, a 5.1V diode and a resistance of 0.15 ohms. I had a 0.3om resistor so I gave a 4.7V diode; the power supply started. The voltage value on the diode during operation is about 0.028V, so I suppose that it has a protective function and the power supply would also work without it.