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No Sound In TV Caused By A Corrupted EEProm IC
This Philips CRT TV with the model of 21PT2152/69R was brought to me for repair by a friend of mine. The complaint by him was no sound but when run on AV mode (sound) it was good.
I tested it and true enough even the volume already set to 72 (see photo below) the sound still can’t be heard.
Next I entered into the service mode by using few combination keys by following the steps below:
Bad news, even after change the setting in the service mode, the sound still would not come. I left only one choice which is to reprogram the EEprom IC. I kept lots of EEprom IC original programs for many different brands and I have this Philips Model -See the photo below:
I soldered the bad IC out from the circuit board and placed it onto the IC socket in the EEprom programmer. Once turned On, this programmer will overwrite the bad EEPROM data with the good data and the LED 3 will blink. If the blinking has stopped, the LED 3 will remain lit.
I took the IC out and soldered it back to the TV board and turned On. Voila! the sound came back. Even before it hit 50 in the sound control I could already heard the sound.
If in case still no sound then you may have to follow the procedure below to use the Compair software.
I would not cover this procedure since the TV now already working. If you want to be good in CRT TV repair you can get humphrey’s ebook HERE.
This article was prepared for you by Suranga Bandara who owns an Electronics repair shop in Anuradapura, Sri Lanka.
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Note: You may check out previous post about fixing active speaker in the below link: