RCA F19421 Ch# TX808s

[Charlie East]

Dont have a schematic, Set will turn on , Full volume, Cant turn it down.
Volume indicator on screen is at max, Cant change channels.Did notice one
big transistor TP65 is hot to touch.
Have screen, but cant get any menu items. Like its locked up in vol up. The
vol switches are. good.
Anyone have a schematic?
Charlie
[email protected]

 

[Tom MacIntyre]

Dont have a schematic, Set will turn on , Full volume, Cant turn it down.
Volume indicator on screen is at max, Cant change channels.Did notice one
big transistor TP65 is hot to touch.
Have screen, but cant get any menu items. Like its locked up in vol up. The
vol switches are. good.
Anyone have a schematic?
Charlie
[email protected]

What happens if you run it with Volume+ removed? What are voltages
like around the 2 volume controls?

Tom

 

[Charlie East]

Checked the voltages on the switchesVol- 5.5vdc, vol+ was 3.5vdc, also
noticed one of the channel buttons was low, Hit them with contact cleaner
and push them all a few times, now the set works fine,
Charlie

 

[[email protected]]

Charlie East:
Well.... there you have it ....

You can thank Tom MacIntyre for insisting that you "check" the switches
again.
electricitym
..
..

 

[Tom MacIntyre]

Checked the voltages on the switchesVol- 5.5vdc, vol+ was 3.5vdc, also
noticed one of the channel buttons was low, Hit them with contact cleaner
and push them all a few times, now the set works fine,
Charlie

Heck...should've bought a lottery ticket that day too.

Tom