Question about Quasar SP-3231 TV
The set you are talking about I am unfamiliar with .. however as an engineer for 23 years I am sure it is not unlike any other CRT TV as you say you have no voltage on the rgb is the tube heater on ( you should see a glow at the end of the tube ) if not check you heater rail voltage , check your oscilator Ht output transistor should be 300 to 360 volts on the emitter if this goes down then the lineoutput satge will not opperate hence no picture and in many cases the audio is fed from the secondry of the Line output transformer hence no sound either .. DO NOT ATTEMPT TO DO THIS UNLESS YOU HAVE HAD TECHNICAL TRAINING VOLTAGES HERE ARE IN EXCESS OF 19 KV to 25,000 Volts DEPENDING ON TUBE SIZE AND SHOULD NEVER BE ATTEMPTED BY UNTRAINED PERSONEL... Vortash
Posted on May 10, 2009
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Posted on Jan 02, 2017
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