PHILCO TV Repair: Common Faults and Solutions.
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Results: 4740
Results: 4740
PHILCO Repair Guide: Common Issues and Fixes
Brand | Model | Fault | Detailed Problem | Solution | By |
---|---|---|---|---|---|
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 |