Hitachi 14″ CRT TV Repair
The complaint of this Hitachi CRT TV was white screen with horizontal lines.
The first section to check is the output dc voltage from the flyback transformer.
The voltage should be about 180VDC and it is going to the CRT RGB circuit section.
The problem now is this voltage only measured 19.4 vdc which is too low.
I had to trace this 180 vdc circuit line and I found an electrolytic capacitor leads already bad and a leaky diode.
After the replacement of the both components, the voltage now read at 163.9 Volt which is still in the acceptable range.
Remember to clean the area with chemical and make sure all the components are properly fitted before turning On the power. Once done the cleaning, I powered On the TV and it was working fine.
This article was prepared for you by Suranga Bandara who owns an Electronics shop in Anuradapura, Sri Lanka.
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Note: You may check out his previous repair article in the below link:
If you want to learn how to repair CRT TV then you can visit the link below: