| Make | Model | Problem | Solution | Date |
| | | |
| Found: 442
|
| Decca | 190 | Will not tune whole band. | Touch-pad membrane , TAA550 33v reg , last tuner. | 14-09-04 |
| Decca | 30 | brightness - variations intermittent. | Clean preset brightness control. | 14-09-04 |
|
|
| Decca | 30 | Contrast - varying esp between stations. | C60 ( 22u f ) | 14-09-04 |
| Decca | 30 | Green picture. | IC MC1327P. | 14-09-04 |
| Decca | 30 | Light & dark vertical bands ( striations ) | PL509 , P7500 , C423. | 14-09-04 |
| Decca | 30 | Line slow to settle after adj line freq. | R430 ( 39k ) high. | 14-09-04 |
| Decca | 70 | Brightness reduced. | R910 ( 180k , 1w ) o/c , VR908 ( 2M2 ) o/c. | 14-09-04 |
| Decca | 70 | Dead - blowing chopper transistor ( int ) | R637 ( 2k2 , 7W ) o/c , dry joint on TR604 ( 8SR56 ) | 14-09-04 |
| Decca | 70 | Dead - blown fuse & chopper. | D608 , D610 , C627 ( 10uf , 16v ) | 14-09-04 |
| Decca | 70 | Dead - blown fuse 1A F601. | Darlington BUW , D608/610 , Tr601/2/3/4 , IC601 , C627 , D603/4. | 14-09-04 |
| Decca | 70 | Dead. | C624 ( 100u f ) o/c. | 14-09-04 |
| Decca | 70 | No picture - e.h.t.present | Yellow lead on back of mother board by decoder off. | 14-09-04 |
| Decca | 70 | Startup - intermittent. | R625 ( 180k ) | 14-09-04 |
| Decca | 70 | Sync - frame sync poor. | C308 ( 10uf ) o/c. | 14-09-04 |
| Decca | 70 | Tripping - fuses ok. | C633 ( 680pf ) s/c. | 14-09-04 |
| Decca | 70 | Tripping - intermittently. | Check C617 ( 6 8nf ) for leak. | 14-09-04 |
| Decca | 70 | Tripping. | D602 ( ZPD22 ) leaky , R636 o/c , C633 ( 680pf ) s/c , IC61. | 14-09-04 |
| Decca | 70 | Tripping. | Trip , C633 fit 1 , 000pf instead , drys on chopper transistor | 14-09-04 |
| Decca | 70 | Vertical red stripes. | C208 ( 22nf ) | 14-09-04 |
| Decca | 80 | Channel - no channel change. | TR713 , D300 | 14-09-04 |
| Decca | 80 | Channels - will not change from C4 to BBC1. | C3 ( 0.1f ) | 14-09-04 |
| Decca | 80 | Dead - blowing mains fuse for no reason. | Check fuse holder for being loose or charred. | 14-09-04 |
|
|
| Decca | 80 | Dead. | D302 ( IN4148 ) , D600-3 , RBA920 , LOPTX , tripler. | 14-09-04 |
| Decca | 80 | Int frame collapse. | Frame IC , vertical hold control. | 14-09-04 |
| Decca | 80 | Line collapse. | Dry joint on L401 , Lin Lin & width coils , C403 o/c. | 14-09-04 |
| Decca | 80 | Sync - loss of line sync. | IC TCA270 demodulator IC on IF panel. | 14-09-04 |
| Decca | 80 | Sync - loss of line sync. | IC TDA920 sync/line osc IC. | 14-09-04 |
| Decca | 80 | Teletext - interference. | 4 Page lay out. | 14-09-04 |
| Decca | 8901 | Tripping or HT low ( Should be 115v or 109v ) may start up correctly if scan coils unplugged . | C803 220uF 16v ( PSU IC supply ) OC. | 14-09-04 |
| Decca | 9478 | POOR LOW CONTRAST PICTURE | R427 - 120k ( BEAM LIMIT SUPPLY FROM 121v ) | 14-09-04 |