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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
Make
Model
Problem
Solution
Date
Found: 4551
Philips
CP90
Focus fluctuates
Tr5763
14-09-04
Philips
CP90
Frame collapse - with small scan below it.
Crack in print by R3275.
14-09-04
Philips
CP90
From cold will come on if warm will not start up
D6670 ( IN4418 )
14-09-04
Philips
CP90
Function knobs on CTV fail
Voltage + 4,9 V on pin 42 IC 7840 present. Oscillogramm on pin 31,32 present. Replace IC 7840 (TMP47C432P-8188; 4822 310 31849). Important: mount the metal-shielding with earth to bridge 9732 (TMP47C432P-8189; 4822 310 31851)
14-09-04
Philips
CP90
Impurity & lines at sw on
Degaussing therm 98017 - used 96009 & dry joints loptx
14-09-04
Philips
CP90
Int dead with whistle from chopper
C2700 4.7uF O/C in the PSU.
14-09-04
Philips
CP90
Int fail to switch on
C2700 4µ7
14-09-04
Philips
CP90
Int flashing - low gain - poor sync.
Drys in IF/Sync can.
14-09-04
Philips
CP90
Int height
dry joints in fop stage & psu
14-09-04
Philips
CP90
Int off when heated
Pin 2 chopper tfmr T5654 dry joints
14-09-04
Philips
CP90
INT PICTURE
DRY JOINTS IN IF CAN
14-09-04
Philips
CP90
Int sound at switch on
bad conns h.phone skt - linked out
14-09-04
Philips
CP90
Int sw on from cold
C2703 33µ from pin 10 chopper trfmr & C6238 470µ pin2 LOPTx
14-09-04
Philips
CP90
Int switch on from cold
C2703 330µ 25v
14-09-04
Philips
CP90
Int trip & patterning or dead with no line osc
C2691 330µ 25v low cap also check C2703
14-09-04
Philips
CP90
Int trip from cold
C2700 4µ7 63v crowbar trip decoupler
14-09-04
Philips
CP90
INT WON'T COME ON FROM COLD
C2703 330uF 25v LOW
14-09-04
Philips
CP90
Intermittent loss of sound.
Headphone socket.
14-09-04
Philips
CP90
Intermittent red , green or blue.
Check for drys on CRT PCB.
14-09-04
Philips
CP90
Line output transistor, T7619, repeated destruction.
Check/Replace TDA2579 (4822 209 72363) line oscillator, replace T7630 line driver - BF483 (4822 130 42607).
14-09-04
Philips
CP90
Line pullong & Field jitter
C2075 ( 10uF )
14-09-04
Philips
CP90
Loud buzz in st/by
St/by Thy D6726
14-09-04
Philips
CP90
Low contrast picture.
C2495 ( 33nf ) o/c.
14-09-04
Philips
CP90
Low R/C range
TDA3047 Rx chip
14-09-04
Philips
CP90
Memory batt drains aft several days
C2901 22nF leaky
14-09-04
Philips
CP90
Motorboating power supply.
Replace D6694 by BYD331 (4822 130 42606), D6701 - 1N4148 (4822 130 33939), D6702 - 6.2V zener (4822 130 34167).
14-09-04
Philips
CP90
No chan display or st/by light
C2875 330µ 6.3v s/c
14-09-04
Philips
CP90
No chans or display (aft loptx replacement)
No 6v to led drivers Tr7876 & Tr7878 - check C2875 330µ 6v
14-09-04
Philips
CP90
no col
pin 6 TDA3561A = 0v ; C2278 22n leaky
14-09-04
Philips
CP90
No col
make sure that the TDA3561A is a Philips type and NOT a Telefunken type The TFK ones do not work for some reason. Try overriding the colour killer by connecting pin 6 to 12V rail via a 470 ohm resistor. If the reference is off check components around pins 23-26 inclusive. Also check C2282 and C2283 (pins 4 & 2 respectively) C2281 may also have dried out.Make absolutely certain that the sandcastle pulse is ok. Many odd faults can be caused by this not being quite right. If possible change the TDA2579 sync chip (it's in the IF can). This also brings into question the line phasing. This is also an adjustment in the IF can. R3055 is the line hold. R3038 is the line phase. These pots may not be easy to get to in situ but I would try giving both of them a tweak as they will affect the reference oscillator.
14-09-04
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Last SM download : Miele w110,w115,w120,130
script execution: 0.16 s