RCA model J25230BL Chassis CTC177 hospital tv, no sound

[zeno]

Originally Posted by dieseljeep

I don't remember the access code. You might need a genuine RCA remote.
Maybe Zeno or another tech can guide you.

On TV
Press & hold MENU
Press POWER
Press VOL UP you are now in service mode

with Ch up change the left ## to 76
the channel up / down control the left number
the vol up / down the right number.

left # is the parameter, right number is the actual adjustment.

After the first group of adjustments you will need to enter 77 to
go further. then after that group enter 78.
There are 3 groups & abt. 100 numbers write them all down.
Be shure to get them right.

If the eprom is the cause the audio will come back but the hoz
sync is always off. Its the first adjustment & usually around 18 IIRC.

BTW we had a few of these sets eating e-proms. Cured them by running
a wire from the tuner shield to the ground at the e-prom.

73 Zeno