| Make | Model | Problem | Solution | Date |
| | | |
| Found: 1514
|
| Aiwa | SE211K | St/by only | R617 high (replace with 390K 1/4W) - located behind LOPTX.This causes the micro-controller to shut the set down and store this condition in the EEPROM. You can either replace the EEPROM with the correct one from Aiwa (which then requires setting up with a special handset), or use an EEPROM programmer to reset the values. There are two values that require resetting:
$0139 should be $00 ($2F when faulty)
$013C should be $00 ($33 when faulty)
| 14-09-04 |
| Aiwa | TVC211 | St/by only | Replace EEPROM & R617 - the cause - which goes hi res | 14-09-04 |
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| Aiwa | TVSE211 | No vid/raster with sound - no/poor OSD | IC303 (OSD Sw) pt no Aiwa87A21167010 | 14-09-04 |
| Aiwa | VXD2120K | Pin code resetting when lost | unplug set for 1 hour plus. reduce volume to minimum. simultaneuously press Volume down on unit and "7" to reset pin code and customer ID | 14-09-04 |
| Akai | 2185 | Won't go into st/by | CHECK SUPPLY TO PIN 1 OPTOCOUPLER - R572 ( 470ohm ) | 14-09-04 |
| Akai | CT-T21N32S | I have an Akai CT-T21N32S which will not fire up, the red LED is illuminated on the front but nothing else happens, I have tested dozens of components but to no avail, the block diagram in the service manual I have is unreadable which is quite upsetting a | cure: replace eeprom IC602 ref
| 23-06-05 |
| Akai | CT2107MS (Onwa) | Int off with blob in centre of screen | Check for hairline cracks around chopper tfmr pins | 14-09-04 |
| Akai | CT2115UK | Lack of width & burning smell | R824 100R 2W overheating due to dry joint L824 | 14-09-04 |
| Akai | CT2115UK | St/by only | PCA84C640P micro | 14-09-04 |
| Akai | CT2125 | Comes on with chirping noise & st/by led on then trips out after 1/2 min | C817 100µ 25v | 14-09-04 |
| Akai | CT2125 | Int blank raster with fb lines | OK when con TD203 on txt pcb removed - TZ01 27Mhz Xtal | 14-09-04 |
| Akai | CT2137 | Field scan only I" | No 33v via R442 - 5R16 8k2 o/c | 14-09-04 |
| Akai | CT2137UKT | No sound except hiss - ok through scart | when a 6Mhz resonator was fitted in vacant place 30F1 sound ok | 14-09-04 |
| Akai | CT2137UKT | Vision buzz | Remove digital transistor 9tr9 | 14-09-04 |
| Akai | CT2142VNT | Poor pic with fbck lines and curious col | IC301 pin 12 supply only 7v5 (9v1). R424 (0R68) hi res | 14-09-04 |
| Akai | CT2159 Onwa | Field faulty - int lines at top etc | C417 220mfd 16v, C423 2200mfd 25v, C435 470mfd 16v | 14-09-04 |
| Akai | CT2159UT Onwa | No start up | C910 & C912 47µ | 14-09-04 |
| Akai | CT2159VT | Dead | Sw mode tr overheats - replace D901, C405, C910, C912 & C431 | 14-09-04 |
| Akai | CT215UK | Trips off with chirp & no st/by | C817 100µ o/c | 14-09-04 |
| Akai | CT2179N-UK | Line osc too fast | C416 220pf 1kv dry joint, R412 10k ?w o/c | 14-09-04 |
| Akai | CT2179NUK | Whistles for 1sec then dead | C807 47uF 25v | 14-09-04 |
| Akai | CT2179UK | Int blanking pic | RIC01 SPH113 chip faulty (blanking sig o/p at pin 25) | 14-09-04 |
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| Akai | CT2185 | Reverts to st/by aft few secs from sw on | Pin 19 of micro low - R748 100k pull up res faulty | 14-09-04 |
| Akai | CT2185-10 | St/by only | dry joints psu | 14-09-04 |
| Amstrad | 3021 | Bright pic with fb lines | R111 220k on crt base | 14-09-04 |
| Amstrad | 3021N | Dead | Q1 BUZ90A s/c, F01 2A o/c, R1 270k 1w o/c, R5 680k also replaced | 14-09-04 |
| Amstrad | 3121N 11AK12 | St/by only - psu o/ps present except 12 & 8v | IC301 (CTV352/V1.4) and IC302 (ST24C02AB1). | 14-09-04 |
| Amstrad | CTV2110 | Dead - psu failure | Apparently C410 was fitted the wrong way in some sets causing R 418 & R419 to overheat which causes the power supply to fail and heat damage to the PCB | 14-09-04 |
| Amstrad | CTV2110 | Dead - psu working | IC302 AN5601 jungle chip s/c at supply pin. When replaced, sparks from crack in print under lopt- repair & new AN5601 chip | 14-09-04 |
| Amstrad | CTV2110 | Field collapse | ZD403 12v zener s/c & R435 5R6 o/c | 14-09-04 |