| Make | Model | Problem | Solution | Date |
| | | |
| Found: 180
|
| Decca | 145A | Channels - int channel change. | Focus gap flashing over on CRT base. | 14-09-04 |
| Decca | 145A | Fast tripping from cold. | C808 ( 100u f , 25V ) by TDA4600. | 14-09-04 |
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| Decca | 145A | No frame. | R434 ( 1.2R ) o/c by LOPTX. | 14-09-04 |
| Huanyu | 37C3 365A | Dead - fuse o/c. | Bridge recy , 6ohm , 6W R901 o/c , ZD907 ( 2.7v zener ) , Q781 ( 2SD898B ) line | 14-09-04 |
| Huanyu | 37C3 365A | Line collapse Int. | Drys on T781. | 14-09-04 |
| Huanyu | 37C3 365A | Line collapse. | R783 ( 220ohm , 1W ) o/c/burnt , resolder Lin coil. | 14-09-04 |
| Huanyu | 37C3 365A | No line. | R783 ( 100R ) o/c , D781 s/c , Due to drys on L783. | 14-09-04 |
| Huanyu | 37C3 365A | No picture. | L509 ( 100uh ) o/c , 12v feed to colour decoder IC. | 14-09-04 |
| LG | CF25A50F | Field mod when FOPTr has blown | Fit TDA8350Q & use heatsink compound as well as the grey thermal transfer pad between the chip & the heatsink. Change C352 to 22mfd (was 47mfd) 50 volts Change C708 to 22mfd (was 47mfd) 100volts . This is located to the left of the LOPT on the 45 volts rail. Change FR359 to 22ohms half watt fuse resistor (was 10 ohms) This is also located to the left of the LOPT on the 45 volts.
rail. Add a 0.01 mfd cap on pins 8 & 9 of the frame chip & 0.1mfd between pins 7 & 8 (both 100volts) | 14-09-04 |
| LG | CF25A50F | Reverts to st/by aft 2-3 secs, HT drops to 60v | IC351 FOP chip TDA8350Q & FR350 10R fusible | 14-09-04 |
| Matsui | 28N05A | No sound | Reprog EEPROM | 14-09-04 |
| Mitsubishi | 25AV1BDS | dead/tripping led flashing | replace C702 1000µ 6.3v with 10µ & C955 2200µ 16v with 3300µ & do a reset (sw on whilst holding reset button in (near tuner)) & set up eeprom options | 14-09-04 |
| Mitsubishi | C25A4STX Euro 4 | Dead , Line OP transistor SC. | Replace C906 47uF 63v , R901 4R7 10W Q901 , IC901 , D907 , D908 ( both RD3.OFB1 ) and C975 47uF 63V. | 14-09-04 |
| Mitsubishi | CT21AV1 CT25AV1 | Failure of Q552 | Order & fit AVM5KIT | 14-09-04 |
| Mitsubishi | CT21AV1 CT25AV1 | Tuning drift mainly at top end of band | Add ( 180K ) & Diode ( IN4148 ) in series cathode of diode to 5V pin 6 Tuner & res to Tuning Voltage line pin 2 | 14-09-04 |
| Mitsubishi | CT2525AV1BD | E/W faulty | L504 shorted turns - Pt no MITS409P749010 | 14-09-04 |
| Mitsubishi | CT25A2STX | COLOUR SUB-CAIER OFF SPEED | C604 OPEN | 14-09-04 |
| Mitsubishi | CT25A2STX | Cuts off totally 5 secs aft switch on keep pressi | Measure H.T if rises up to 180V then back to 145V replace C906 ( 47uF ) | 14-09-04 |
| Mitsubishi | CT25A2STX | Cuts out at sw on - HT high at 180v (145v) - will come on eventually | C906 47µ 63v in base Q901 (overvolts prot) | 14-09-04 |
| Mitsubishi | CT25A2STX | Dead - Q901 s/c. | Fit mod kit ( wVe 77901 ) R901 , D908 , Q901 , C908 to 2700pf , C966. | 14-09-04 |
| Mitsubishi | CT25A2STX | DEAD-INT. | Q501 LOW GAIN | 14-09-04 |
| Mitsubishi | CT25A2STX | NO GO RED LED COMES ON THEN GREEN LED THEN BOTH GO | D909 4.3v ZENER | 14-09-04 |
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| Mitsubishi | CT25A2STX | SOMETIMES TRIPS WHEN BROUGHT OUT OF SBY ( HT RISIN | C609 47mfd | 14-09-04 |
| Mitsubishi | CT25A3STX | `Dead & no st/by led | C906 10µ 50v hi esr, Q552 2SD1878 leaky - used 2SD1555 in lieu | 14-09-04 |
| Mitsubishi | CT25A3STX | Dead - keeps blowing LOPTrs | Dry joint on wire link near LOPTr | 14-09-04 |
| Mitsubishi | CT25A4STX | Buzzing on LH speaker only | C909 - increase to 1000µ | 14-09-04 |
| Mitsubishi | CT25A4STX | DEAD | REPLACE TEA2261, D909 AND Q552 | 14-09-04 |
| Mitsubishi | CT25A4STX | Impurity - degaussing faulty | Replaced o/c Q903 JC501R - used BC639 in lieu (same pin out) - in degaussing relay driver. | 14-09-04 |
| Mitsubishi | CT25A4STX | NO SOUND, TEXT OR NICAM | FIT IC702 KIT | 14-09-04 |
| Mitsubishi | CT25A4STX CT29A | DEAD , NO LINE DRIVE , CHECK FOR MOMENTARY VERY low | REQUIRES FEEDBACK FROM LINE STAGE OR WILL SHUT DOWN. O.C. PIN , CHECK FOR VERY LOW AMPLITUDE PULSE , ON SCOPE , REPLACE DRIVE TRAN | 14-09-04 |