[TechAssist] Re: RCA Chipper Checker, and the Three blind mice
- From: "Ty Kraemer" <ty1k@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 22 Jul 2002 09:03:57 -0700
Gary,
The following advice might sound as crazy as the concept of "mutual
destruction deterrent" or "Military Intelligence". I have used this method
for years, and it works.
First, remove all possible power sources, such as standby batteries.
In your case, discharge all large capacitors, this to insure against
possible electrolyses.
Take the whole board home with you and place it carefully in the
dishwasher. Add the soap as you would with dishes. You might have to remove
the top rack.
The next step is critical! Let it sit in the warmest place you can find
for two days. (This does not include the self cleaning oven.) If you have
Relays or IF type cans, let it sit for a week. This will assure that all the
moisture is out of the works. In the winter, I place the board in a Fruit
Drier at 100 degrees.
The only problem I have had with this method is when there is a large
buildup of oxide underneath an LSI and the spray can not get to it.
Good luck and happy troubleshooting.
Ty
Tiberius (Ty) Kraemer
Blue Star Electronics
3312 Silverton Rd.NE
Salem, OR 97303-2753
Phone: 503 391 1491
E-Mail: ty1k@xxxxxxxxx
----- Original Message -----
From: "Gary McCartney" <number63@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, July 20, 2002 3:34 PM
Subject: [TechAssist] RCA Chipper Checker, first time user, help please
I have my new Chipper Checker connected to a CTC178L projection set. The
set is dead because some mouses pee'd on the chassis (I mentioned this
set a few months ago in case anyone remembers, but I only work on it
when I'm caught up with customers items- it belongs to my buddy who is
very patient).
I installed the new eeprom and microprocessor kit before I got the
Chipper Checker.
Now with the Chipper Checker connected, I get error code 136, TVB (tone/
volume/ balance) which means U1503 is not communicating with the
micrprocessor. Does this mean that U1503 or associated circuit is bad?
I do have U1600 removed from the circuit (stereo decoder IC) so why
doesn't Chipper Checker come up with error code 128 (no communication
from U1600) ?
How accurate is this Chipper Checker at determining faults?
The basic problem with the set is that when remote power button is
pressed, I get 3 chirps, then nothing. During these chirps, I get 120 V
pulses B+ on the main 135V line, and I get a nice looking horizontal
output waveform on the HOT collector. I have the flyback lead to the HV
splitter disconnected. I removed U1600 because of corrosion on the pins.
Replaced micro and eeprom because pins were corroded and thought that
could be the problem with set not starting. I also have CRT boards
unplugged from the tubes.
Thanks for any help.
--
Gary McCartney
McCartney Electronics
7134 Fife Rd, RR 7
Guelph Ontario Canada N1H 6J4
Fax: (519)821-1530
email: number63 (at) inetsonic.com
------------------------------------------
To REMOVE your email address, click here:
http://www.tech-assist.org/unsubb.html
To CHANGE your email address, click here:
http://www.tech-assist.org/change.html
------------------------------------------
***NEW*** Tips Added Instantly!!!***
Submit Repair Tips here:
http://www.tech-assist.org/secure/tip/
------------------------------------------
To REMOVE your email address, click here:
http://www.tech-assist.org/unsubb.html
To CHANGE your email address, click here:
http://www.tech-assist.org/change.html
------------------------------------------
***NEW*** Tips Added Instantly!!!***
Submit Repair Tips here:
http://www.tech-assist.org/secure/tip/
Other related posts:
