Philips CP110 Chassis

Latest TV repair tips and faults

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id:= 011650
140v rail low (60-70v)
Check C2661 (2200uF) for o/c (use philips part only)

id:= 011651
Bottom of raster missing
Check R3572 (1.5ohms) for o/c

id:= 011652
Channel display goes to ` e
This was due to the micro 7840

id:= 013660
Corrugated verticals
Check / replace C2633 (100uF,25v)

id:= 011654
Dead
Check the BUT11AF, TEA1039, bridge rectifier diodes, R3659 (100ohm), R3658 (120ohms), C2661 (upgrade to 2,200uF) and CNX62

id:= 011655
Dead
Check / replace C2162 (0.47uF) located near C2611

id:= 013661
Dead
Check the 1.6A fuse for o/c, the BUT11AF for s/c, the mains rectifier for s/c also replace the CNX62 as a precaution, if there is still no H.T. suspect C2656 (150uF)

id:= 013665
Dead with F1 in display (145v H.T present)
Check for dry joint at D6668 (15 and 12v supplies)

id:= 011658
Dead with `F1` in display (`F1` means 12v supply missing)
This was due to leakage of T7739

id:= 011659
Dead, 300v at collector of the BUT11AF
Low start volts at pin 9 of the TEA1039 (around 1.2v), the fault was caused by C2656 being o/c

id:= 011656
Dead, BUT11AF and fuse both ok
Check for 9v at pin 2 of the TEA1039, if low (at about 2v) replace the TEA1039 itself

id:= 011653
Dead, F1 showing in display
Check wickman fuse 1653 (T1.6A) for open circuit

id:= 011657
Dead, no 11v at pin 9 of the TEA1039 (only in start up)
Check / replace C2656 (150uF) or C2661 (2200uF)

id:= 013664
Dead, primary H.T low at 190v
Check reservoir capacitor C2656 (150uF) for low capacitance

id:= 013662
Dead, tripping, channel light pulsing
The l.o.p transformer had shorted turns 1-17

id:= 013663
Dead, voltage output from bridge rectifier low at 190v
Check C2656 (150uF) for low capacitance

id:= 011660
Distorted verticals
Check / replace C2633 (100uF)

id:= 017107
E/W correction not regulated
Change C2589 (33uF, 16v)
(Karino)

id:= 011661
East west bowing
Check R3599 (47ohms) on the c.r.t base also check Tr7600 and C2613 (390nF)

id:= 011662
F1653 o/c
Later sets have over voltage sub panel, if set has this and fuse blown replace CNX62 opto

id:= 011663
Field collapse
Check Tr7572 and Tr7573 for s/c also R3568 and R3571 for o/c

id:= 013666
Field collapse / int
Check the 12v regulator for dry joints

id:= 011664
Field cramping / int
Check for dry joints on L5663 or C2574 (680uF)

id:= 013667
Hissing sound
This was due to the chopper transformer (replaced!)

id:= 013668
Int blue screen
Check for dry joints on the decoder chip also check the pal delay line

id:= 011665
Int dead
Check the line driver TRT630 (BC337) for o/c

id:= 013669
Int goes off briefly, especially when tapped
Check for dry joints on the metalwork/heatsink by the chopper and l.o.p.t

id:= 013670
Int various faults (bright, pulsing, standby, dead)
The chopper transformer was faulty (int internally)

id:= 011666
No display
Check / replace the 10uF 350v capacitor on the right side by the l.o.p.t

id:= 011667
No display, 140v line low at 60-80v
Check the 6v regulator transistor 7738 (BC548)

id:= 013671
No ew correction after l.o.p transformer replacement
Check R3599 (47ohms) on the c.r.t base for o/c also check Tr7601 or 7600? (BF819) for s/c collector to emitter

id:= 011668
No picture / looks low emission for 1st few minutes
Check / replace C2670 and C2621 (both 22uF,250v)

id:= 011669
No picture for 5 mins, ripple on LT and H.T when off
This was due to optocoupler TR7670 (CNX62A)

id:= 013673
No picture or sound, pulsing
The H.T was pulsing and low, due to the 100uF capacitor on the p.s.u sub panel

id:= 013672
No picture, sound ok
The E.H.T and A1s gradually appeared with time, the fault was due to C2621 (22uF,250v)

id:= 011683
No picture, sound ok, E.H.T and heaters ok (may be only when cold)
This was due to the CNX62A optocoupler causing excessive ripple on L.T and H.T lines

id:= 011672
No raster, E.H.T and heaters present
Check / replace R3570 (8.2K) in the field blanking stage

id:= 011686
No results, BUT11AF trying to work
Check D6672 on the p.s.u secondary for s/c

id:= 011673
No sound and picture with F1 showing in display
Check for cracks in the print by line output transformer

id:= 013674
No sound or raster, shows F1 in display
There were no voltages on the audio chip, safety resistor R3672 (1ohm) under the standoff panel near the chopper transformer was o/c

id:= 016885
No sound, picture faint. Caused by lightning
Changed CPU TMP47C432-818x There are different versions: -8188 and -8189 depending on text-tv models. Also check IC7675 (L7812CV) for loose connections
(Dag)

id:= 013675
Patterning on all channels
Appears to go past station slightly when tuning, try adjustment of the I.F coils (bottom one nearest edge of pcb gave most improvement)

id:= 011674
Picture flashes cyan or green when warm
Check / replace R3415 (470Kohms) on the tube pcb

id:= 011675
Picture pulses on and off
Check TR7413 or R3415 (470Kohms) on the tube base

id:= 011676
Poor remote range
Suspect C2967 (100uF,10v) inside the remote can of o/c

id:= 011678
Power supply blows after 3 - 4 hours
Check for leakage of polyester capacitor C2656 (1uF,100v)

id:= 011677
Power supply runs but no E.H.T, display shows `88`, a faint raster, short height and width with lower half darker, set ok when backup battery removed
Replace D6901 (after replacing the backup battery)

id:= 011679
Pulsing in and out of standby until warm
Check small subpanel for faulty capacitors especially the 100uF types

id:= 011680
Reduced width
Check / replace C2620 (22nF), R3599 (47ohms), R3629 (1Mohm) and R3639 (47Kohms)

id:= 011681
Set pulses on and off gradually staying on longer and longer until it comes on fully
Try TEA1039 and optocoupler, if still faulty check 15v protection pcb near chopper transformer and change 100uF capacitor

id:= 011682
Set starts but then trips violently as picture appears
The degaussing posistor was faulty

id:= 011684
Striations on left hand side
Check D6630 for o/c

id:= 013676
Verticals rippling
Check / replace C2633 (100uF)

id:= 011685
Will not change channels from front buttons or sometimes vol will not adjust
This can be due to the switch membrane or possibly the connecting socket

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