PHILIPS TV Repair: Common Faults and Solutions.

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PHILIPS Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
PHILIPS	CP90	Dead - whistling - over volts prot firing	Ht above normal 95v - tr7701 bc548 in error amp cct s/c
PHILIPS	CP90	Dead - went off with a flash	Dry joints chopper tr 7677, s/c mains rect 6657 byd14j, o/c 2a fuse
PHILIPS	CP90	Dead - st/by only - ht half its normal value	R3623 8r2 hi res, d6667 1n4148 o/c
PHILIPS	CP90	Dead - pri ht ok	Dry joints chopper tr coll
PHILIPS	CP90	Dead - overvolts prot operating	3668 15r sm resistor o/c
PHILIPS	CP90	Dead - no o/p from psu	S/c across 95v line - c2695 2n2 in parallel with d6695 byw95b s/c, f1690 400ma wickman fuse o/c
PHILIPS	CP90	Dead - no display, ht present	C2691 330µ 25v (19v res cap)
PHILIPS	CP90	Dead	2 x 330µ caps in psu sec
PHILIPS	CP90	Dead	D6665 1n4148 leaky
PHILIPS	CP90	Dead	T7677 o/c collector
PHILIPS	CP90	Dead	S/c across lop - loptx faulty - quite common
PHILIPS	CP90	Dead	Check d6609 & d6610 tr7702
PHILIPS	CP90	Dead	Check c2679 ( 1nf ) d6679 replace with ( byd33 ) c2695 ( 2.2nf ) r3623 ( 8r2 ) d6667 ( in4148 )
PHILIPS	CP90	Dark picture	C2495 33nf
PHILIPS	CP90	Dark pic - volts at contrast pin col dec chip low	C2495 33nf in beam lim cct
PHILIPS	CP90	Control micro processors	A production change has been introduced adding a shield to the control micro processor to prevent the processor being influenced by external fields. replacements will be supplied as a kit comprising the processor, shield and fitting instruction. the sh
PHILIPS	CP90	Contrast weak	R3944 5k preset broken
PHILIPS	CP90	Contrast - low.	No volts on pin 7 of loptx c2495 ( 33nf ) s/c.
PHILIPS	CP90	Continuous page header display in subtitle	Change text ic to type mab8461p/w196 part no4822 209 62479
PHILIPS	CP90	Channel display shows 3 then f1	D6695 oc f1690 400ma oc