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RCA Ctc185a7

 
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Frank
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PostPosted: Sun Oct 07, 2007 12:22 am    Post subject: RCA Ctc185a7 Reply with quote
I have here a chassis ctc 185 that has no sound good pic ,checked volts at ic 902 and it's ok, i'm sure it 's also a corrupted eeprom because i had to rework on the tuner grounds, i have info on the chassis ctc 175 that says to wick p1n 29 and connect a low ohm resistor to ground, i wonder,if someone has this ctc185a7, 19gt240 and what pin# that i should wick to make the sound to come out of mute.
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minnie



Joined: 18 Aug 2005
Posts: 2880
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PostPosted: Sun Oct 07, 2007 5:42 am    Post subject: Reply with quote
Did you unplug it, and plug it back in???
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PostPosted: Mon Oct 08, 2007 10:44 pm    Post subject: Reply with quote
Thanks Minnie i did that.
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Frank
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PostPosted: Tue Oct 09, 2007 1:44 am    Post subject: Reply with quote
minnie wrote:
Did you unplug it, and plug it back in???



Minnie I have here a tip for the chassis ctc 175-76-77-87 about the eeprom no audio ,since they say when it come up to a no sound situation on the ctc 185 chassis to fallow the ctc175-76-77-87 the same troubeshoot technics,
the tip is,.With the AC desconnected from the chassis, wick out pin 8 of the eeprom,use a pick to short the pin to the Pad to temporarily apply B+ to the eeprom. Plug the tv in and turn it on, and then remove the pick to allow pin 8 to float free of the Pad.Use the menu function to sellect the speaker on/off feature and turn the speakers back on. Finally unplug the tv and resolder the pin.

Ok there are some stuff i don't understand for exemple. Use a PICK is this same as a tool? also to the PAD what in electronic terms is PAD ?in the end it says resoder the pin, any help in understanding this points is wellcome.
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