Philco TV Repair: Common Faults and Solutions.

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Philco Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
PHILCO	TC-29V50B	Cold solder on resistor r-841 burns out of ic802(str), d184, c812, q804	In the first production batches, the r841 resistor was mounted very close to the heatsink, which will cause cold soldering and oxidation on its terminals due to heat dissipation. as this resistor is located between the drive and the base of the power transistor, this bad contact will cause the ic802(str), d814, c812, q804 to burn. solution: 1) after the burnt components are replaced, the resistor r841 must be removed, checking that its value has not changed, and if it has, it must be replaced. If its value is ok, its terminals must be sanded and re-soldered in its position on the board. 2) please take this countermeasure for all devices that pass through the authorized workshop for maintenance, whether or not the device presents problems at the power supply.
PHILCO	TP2052	Mirror image, similar to exhausted trc
PHILCO	TV 398	Reduced vertical scan, returns to normal after some time	Capacitor c 614 (47 uf) with loss of capacitance or high esr
PHILCO	TV 398	Dead	Resistor r 911 (240 q) open
PHILCO	TV 398	Image distorted sideways	Resistor r 905 ( 22 k q.i aberta
PHILCO	TV 398	Lack of horizontal synchronism	Capacitor c 601 (10 u f x 25v) without capacitance or high esr
PHILCO	TV 389	Power supply with altered output (170 v) the adjustment trimpot does not act
PHILCO	TV 397	Complete lack of synchronism	Resistor r 401 (684 km) with altered value and/or internal or deficient contacts
PHILCO	PCS2956	Normal voltages, horizontal sweep circuit does not oscillate	Transistors q 706 and/or q 707 (bf 422) faulty
PHILCO	PCS 2Í52	It takes time to set up the fountain, after heating it works normally, but with reduced height	Capacitor c 720 with loss of capacitance or high esr
PHILCO	PCR 2049	No audio, hissing in the speaker	Capacitor c 401 (820 pf) faulty
PHILCO	PCR 1449	";"capacitor c 630 (47 nf) with leakage
PHILCO	PC 20R38	Image shaking vertically	Vertical sweep cl (la7837) with bad internal contact
PHILCO	PC 2038	When turned on, it turns off after about 10 minutes	Resistor r 723 ( 27 k q ) aberta
PHILCO	PC 2035	Rippling image	Capacitor c 701 ( 100 u f x 25 . with loss of capacitance or high
PHILCO	PC 2007	Bluish fabric	Capacitor c 802 leaking
PHILCO	PC 1444	Power supply continually tripping	Resistor r 714 (18k ) with-changed value - the tolerance of. -be 1% of the nominal value.
PHILCO	PC 1444	Turns off after five minutes of operation, remaining in standby	Faulty eprom, replace
PHILCO	PC 1438	Absence of vertical scanning or intermittent scanning	Capacitor c 725 (4.7pfx 25c with loss of capacitance or e: high
PHILCO	PC 1416	"myado" type noise	Capacitor c 804 (1 nf x 50v ) em curto