Electronics Lab Philippines

Electrical and Electronics Repair => Television Repair => Electronic Appliances/Devices Repair (Electronics Technician Forum) => Sony Televisions => Topic started by: Berlin C. Alcayde on October 09, 2020, 09:24:33 PM

Title: Sony KV - 14GMR1 Voltage Shutdown at Flyback Transformer
Post by: Berlin C. Alcayde on October 09, 2020, 09:24:33 PM
mga masters patulong po ako sa tv na ginagawa ko. Ang problema ay bumabagsak ang voltahe sa secondary ng flyback transformer after turning on the tv in 2 seconds. Pag plug ng TV ay meron ng B+ voltage na 120V. Pag turn on ng power switch ay mag oscillate yung flyback transformer then stop after 2 seconds. Pag stop ng oscillation ng flyback ay may B+ pa rin sa main line. Meron 2 blinks sa LED sa harap. anong approach na troubleshooting ang gagawin ko mga master?
Title: Re: Sony KV - 14GMR1 Voltage Shutdown at Flyback Transformer
Post by: zirlou21 on October 10, 2020, 11:53:52 PM

...kadalasan ay error codes ang indication ng power LED blinking, better consult user/tech manual ng particular brand and model ng  tv doon naka indicate mga error codes corresponding kung ilang blink ang na observe mo., mayr emedy procedure or system reset procedure din.  so try mo muna sa software aproach troubleshooting bago tayo pumunta sa hardware troublesooting.

...or wait natin ibang tech baka may direct experience sila dito. search mo sa youtube pag may time ka maraming hint dyan as was also my doing.
Title: Re: Sony KV - 14GMR1 Voltage Shutdown at Flyback Transformer
Post by: BhongTech on October 14, 2020, 09:45:43 AM
2blinks >over voltage protection.