| Make | Model | Problem | Solution | Date |
| | | |
| Found: 117
|
| Granada | C41HS4 Sanyo E4A/B | Field reduced or collapse with blank raster | 12v reg L78M12 | 14-09-04 |
| Mitsubishi | CT21M5 EE4 | Dead - blowing SOC2000 cct prot | Microprocessor s/c +5v pin to chassis | 14-09-04 |
| Mitsubishi | CT21M5 EE4 | No Txt or auto tune/store | eset options in eeprom from service mode | 14-09-04 |
| Mitsubishi | CT21M5BT EE4 | Int loss of pic - sound still present | Invisible dry joint IC650 TEA5101B RGB o/p chip on crt base | 14-09-04 |
| Mitsubishi | CT25M5BT EE4 | Field collapse | TEA2031A (IC551) & supply decoupler R516 0R82 safety resistor. | 14-09-04 |
| Mitsubishi | CT25M5BT EE4 | Green LED only - prev int off - HT present | No line dr from IC201, no micro activity, replace EEPROM 24C08 & set up | 14-09-04 |
| Mitsubishi | EE4 | Dead or int dead - brief flash of green led at sw on | Dry joints opto isol PC951 | 14-09-04 |
| Mitsubishi | EE4 | Service mode accessing | press the service switch (s701, next to the aerial socket) and then button 9 within 5 seconds Press the * button to toggle between the VCJ or OPTION adjustment display.
Press buttons 2 or 8 to increase or decrease the adjustment code number. Press buttons 6 or 4 to increase or decrease data value. After the adjustments, press 0 to write the adjustment data to the EEPROM.To cancel a change, press button 1 and all data adjusted since the last EEPROM write will be reset.TUN 0
Option settings for CT25AV1BS = SAT 1, AUD 10, ATS 1, STD 1, SYS 1, AV1 2, EEX -, SPK 1, EEP -, ABG 02, A1 02, AL 00, ADK 15, MNP 70, TXT -, FFT 1, VOL 74, HYP 1, SCP 20, FMP 23 | 14-09-04 |
| Mitsubishi | EE4 | Trips once at sw on - ok on dummy load | TEA5101B RGB o/p chip IC660 s/c | 14-09-04 |
| Mitsubishi | EE4 (M5 models) | To enter service mode | Press & release S701 next to aerial socket, then press "9" on hset within 5 secs. Buttons 2 & 8 select adj code, buttons 4 & 6 adj data value. Button 1 cancels written data, button 0 stores data into EEPROM see article TV Jan 99 for more details | 14-09-04 |
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| Mitsubishi | EE4 CT21M5BT | Reverts to st/by aft 15mins with a sqeal | HT was too high at 137V, due to R954 (120K in this set) going high | 14-09-04 |
| Mitsubishi | EE4 CT25M5BT | Chopper Tr blows aft few days | Replace Q901 (chopper), R901 (4R7 10W), D909 (3V Zener) and change 220R resistor on the print side of the CRT PCB to 1K2 1/2 watt. | 14-09-04 |
| Mitsubishi | EE4 CT25M5BT | Dead - blows chopper tr s/c | mod, i.e. change the 220R res on print side of CRT base to 1K2 1/2watt,this apparantly prevents a surge from blowing the chopper at switch off | 14-09-04 |
| Sanyo | CBP2152 E4 | Dead - will briefly come out of st/by | HT ok at LOP - no line drive as 12v supply to pin 7 TDA4505 was low; IC362 L78M12 reg chip faulty | 14-09-04 |
| Sanyo | CBP2162 E4 | BLANK RASTER WITH SOUND | TDA4505M IC101 | 14-09-04 |
| Sanyo | CBP2162 E4 | No pic - sound ok - blank raster when A1 advanced | Low amplitude scastle pulse pin 27 - IC101 TDA4505M faulty - first check 12v supply at pin 7, if low then sus IC362 L78M12-RA 12v reg | 14-09-04 |
| Sanyo | E4 - B21 | No control from front panel or R/C | IC701 5v supply & osc checked ok; pin 22 being held low by leaky D743 6v2 zener | 14-09-04 |
| Sanyo | E4-A21 | Reverts to st/by aft 5 secs - if on/off sw held in, steps thro chans with good pic | Pin 15 IC701 micro held low due to Q341 2SC536 (ht sensing) leaky | 14-09-04 |
| Sony | BE4A KVM14M1U | At sw on, only 1 funct could be selected b4 lock up | Replace IC803 EEPROM 24C02 - used blank | 14-09-04 |
| Sony | BE4A KVM14M1U | To enter service mode | Select OSD ,5,Vol+,TV TT appears in right hand corner. Select menu .Adjust with cursor keys .Standby to store new settings. | 14-09-04 |
| Sony | AE4 | Dead | Dry joints R808 can cause LOPTr & Chopper Tr demise | 14-09-04 |
| Sony | AE4 | Dead | Q601 602 both 2SC4834 ,R601 0.1 ohm and Q615 2SC2500 | 14-09-04 |
| Sony | AE4 | No power | Check EHT lead for bad connection & T805 sm | 14-09-04 |
| Sony | AE4 | No power - PSU ok | Q618 leaky | 14-09-04 |
| Sony | AE4 | No power, TV goes on/off,vertical deflection incorrect | IC802 & fusibles R818/819 | 14-09-04 |
| Sony | AE4 | St/by only | EEPROM corrupt - replace NVM IC (IC1003) on A board or reset NVM or reload data from a similar model. | 14-09-04 |
| Sony | BE-4 KV14T1U | coloured lines on top | EEPROM IC002 ST24C02CB1 (875937032) | 14-09-04 |
| Sony | BE-4 KV14T1U | dead | LOPTr Q802 S2055N s/c, R615 0.46R (121737100) o/c, IC601 STRS5706 s/c | 14-09-04 |
| Sony | BE-4 KV16WT1U | frame collapse | DJ L807 wire link to LOPTx earth | 14-09-04 |
| Sony | BE-4 KV16WT1U | frame collapse (no picture) | R814 0.46R 0.5W (121781111) o/c, IC501 TDA9302, C504 100uF 50V, also replace D501 RGP10GP (871930243) or may fail again | 14-09-04 |