Thursday, February 06, 2020

Vestel Power board IPS55 problems – Troubleshooting

17IPS55 board includes AC/DC a full bridge diode rectifier, a DC/DC low power
Flyback converter for stand-by voltage +5V and half-bridge resonant converter for +24V & +12V and two DC/DC Boost Converter stages having 24V input voltages. Total input power is 250W at 100Vac input voltage.
Power board has low power consumption for stand-by mode. 
The only voltage is supplied at stand-by condition is 5V.
For low power consumption in standby mode, +24V and +12V outputs is not activated. 
The only voltage in standby mode is 5V and allowed maximum current is 20mA in this condition.
CN8-INPUT.
Connectors and voltages
Problems and checks - DS is not working
DS is working but there is no backlight, DS is working but there is no sound.

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