46" RCA projo model:P46729BADX1,chassis:PTK169PCA

[[email protected]]

46" RCA projo tv model46729BADX1,chassisTK169PCA
(CTC169PC),year:June 1994.

One day customer tried to turn it on and all he got was a Pacman type
power supply noise (digital noise) for a few seconds,I checked
Q4101=SGSIF461=RCA # 200165 and it's not shorted,I also replaced
C4102=2.2 uf,100v and C4104=15 uf,50v but still.

I don't have a C4108=39 Uf,100v cap in stock nor do I have an ESR
meter, I never do service calls nor repair projection tv's so I need as
many repair tips as possible as this tv is for a neighbour.
Thanks for your time and effort.

Sidney
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova scotia
Canada

 

[Dani]

Look here. http://wa6ati.com/Ctc169.htm

Also:


CTC169 CHANGE THE 4 ELECTROLYTIC CAPS IN THE POWER SUPPLY AND CR4118,

or CTC169-KIT-PTV $78.89 repair kit for CTC169 projection TV
chassis
Includes: C4101 | C4102 | C4104 | C4108 | C4145 | C4401 | C4402 |
CR4118 |
CR4401 | CR4402 | Q4101 | Q4401 | U4101 | HV SPLITTER



[email protected] wrote:

 

[[email protected]]

I disconnected the HV splitter and still no go,but I found
Q4401F=HOT=2SD1885=RCA # 200167=NTE2324 shorted and R4314U=39 ohms,1/2
watt to be visually burnt (comes from 15v SMPS supply),anyone know what
caused these two parts to fail?.Thanks.

 

[[email protected]]

I have not yet gone back to my neighbour's place but I have a used 25"
GE TV model:25GT511,chassis:CTC185AA3 and it has a
CR4105U=PFR-854=NTE576 can I use that in place of CR4118=164590=NTE580
out of the 46" RCA projo (CTC169PC) that I am working on? as I have
noticed that most CR4118's on CTC169s use PFR-851 or 856 or FR-305.

Also I pulled a used HOT capacitor out of an old 27" Sony tv and the
numbers stamped on the blue cap are:

PM564J
400V

is that a 0.056 MF,400V? because I measured it with my Fluke DMM Series
II model:29 and it was 564 nf.

Sidney
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova scotia
Canada

 

[ray13]

The hold down, box shaped, cap in the HO circuit usually blue or gray.
Don't stray from that value as it sets up the amount of HV. Those can't
be off value by more than 3%. And is about 3 times the size of the pin
cap. On a rare set I've seen them use orange drop caps or brown caps
for the hold down.

The .047 sometimes .056 cap is the pin cap, also replace the pin diode
across the pin cap.

HO caps are rated 1500v or better, pin caps in the HO circuit are 400V
or better.

Lot of things can blow the HO. The above are the most likely. Then the
splitter and HO transformer.

It's always a good idea to resolder all the connections in the HO
circuit too.

good luck.