 |
Pace Satellite Faults Guide. |
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Pace Satellite Faults Guide. |
Fault |
Cure |
| Blank raster, OSD unlocked. | Replace R3232(o/c). |
| OSD's sync drifting. | Dry jointed L13. |
| Videocrypt graphics unlocked or drifting. | Replace Q2 on VideoCrypt PCB. |
| No mono sound, weak noisy stereo. | Replace U1 audio demodulator. |
| Streaks on decoded pictures. | Replace C25 - 2200uF 16V. |
| Slow switching out of standby, tuning drift. | Replace C21. |
| Whistling from PSU. | Replace C11. |
| Dimly illuminated standby LED. | Re-solder tuner earthing lugs. |
| PSU tripping, LED's flashing. | Replace R13, R11, D9, C9 and R5. |
| Heavy venetian blinds on picture. | Replace C416 in tuner. |
| 5 to 6 faint diagonal dotted lines, moving. | Replace C29 with high temperature type. |
| Faint decoder graphics. | Change R92 to 43K, and R342 to 180R. |
| No audio. | Replace U15. |
| Stuck in standby | Replace C25 - 2200uF 16V. |
Fault |
Cure |
| No operation, dead. | SMPS transformer. |
| Intermittent sync loss. | Replace C180, (1.5nF). |
| Standby LED flashing. | R13 (0.22R) may have altered. |
| All LED's on & no remote control operation. | Replace C9 and C11. |
| Stuck on one channel. | Dry joint on pin 14 of SMPS transformer. |
| Hum on audio, ripple on picture. | Replace C7. |
| Streaking on picture. | Replace C21. |
| Streaky and patterned picture. | Replace C125 with 1000uF. |
| Venetian blind on picture. | Replace C134. |
| LED's flash in sequence, no operation. | Replace C7. |
| Intermittent or no decoding. | Replace C41. |
| Stuck in standby | Replace C25 - 2200uF 16V. |
Fault |
Cure |
| No sound or vision. | Check Q2. |
| Power supply whistling. | Replace C5, 22uF 16V. |
| Not decoding. | Dry jointed L20, (5V line). |
| Not decoding. | Replace D76, 5V6 Zener diode. |
| Not decoding, invalid card message. | Check card reader contacts. |
| Not decoding, no decoder OSD's. | Dry jointed L19 or U28 defective. |
| Powers up with 1 LED seg. lit, or random display. | U6, or U2. |
| Channel number stuck on screen. | Press STATUS button twice. |
| Picture flicker. | Check D69. |
| No picture, blue raster. | U9 (Nicky) I.C. |
| No sync, negative picture. | C540 in modulator circuit. |
| No sound. | Check PCB track from U15 pin 1 to C54.(Under tuner body). |
Fault |
Cure |
| Faint whine on audio. | Replace C278. |
| No VideoCrypt decoding. | Print broken at L20. |
| Intermittent video via modulator. | Broken track from R558 to L30. |
| Same channel number on every programme number. | Replace U9. |
| Vertical line moves across screen. | Replace C96 with 1uF multilayer ceramic. |
Fault |
Cure |
| Herringbone pattern on RF output. | U15A. Put 2K2 resistor in series with C555. |
| Failed LNB volts. | R543. Also track damage at L3. |
| Rippling saturated colour on encrypted sigs. | Fit 10K resistor from pin 3 to pin 20 of U24. |
| Dead unit. | Check R2 (100K 2W). |
| Low gain RF loop-through. | Check R584 & R566 and D22. |
| Power supply ticking. | Check/replace C5, C6, C7. |
| Power supply ticks, LED segment flashing. | C4 o/c, C87 touching groundplane in + versions. |
| Hum on sound. | C2 (reservoir) beginning to fail, can also cause slow or no start-up. |
| High-pitched whine from TV speaker. | Check C278, U5 and U11. |
| No I/R remote operation. | Dry joints at IR receiver position or X1 not oscillating. |
| No decoder messages. | L20 broken track, U20 failed. U20 also causes mottling on bright colours. |
| Satellite TV picture rolls. | Replace C207. On some PCB's has been fitted reverse polarity. |
| LNB supply will not change polarity. | Check Q2. |
| Very low contrast on UHF output only. | Check & replace Q105 (& remove R559 on S/N above 345100000. |
Fault |
Cure |
| Intermittent horizontal pattern on RF picture. | Replace C51 in modulator. |
Fault |
Cure |
| Noisy, distorted sound. | Check Q30. |
Fault |
Cure |
| No fluorescent display. | Check fluo display seal, and C2. |
| Dim fluorescent display. | Delete D1 on front panel. Fit a 1N4148 diode, cathode to R103 innermost end, anode to R123 outermost end. |
Fault |
Cure |
| No RF output. | Dry joints at U2, track o/c from D15 to SMPS transformer. |
| Rolling monochrome picture. | Check U4, dry joints at L18/19. |
| Stuck in standby, zeros on display. | Check microcontroller PCB to main board interconnections. |
| U1 s/c. | Check C3. |
| Stuck on vertical polarity. | Print break from D10 to C12 & L4. |
| D9 failed. | Replace with BYV96D (120-0009611). |
Fault |
Cure |
| No 12V. | Check PCB for breaks at D18/19. |
Fault |
Cure |
| 3.5MHz pattern when Sky 10 card inserted. | Delete C353 (100pF SMD). |
MSS100 Remote Control |
| Please note: The MSS100 microcontroller, U700, is being changed to that used in the Pace Prima. This change requires the use of the RC10 remote control handset. Please be careful to avoid mixing original and late models and handsets. |
Fault |
Cure |
| No front panel display. | Replace C2 with 1uF multilayer ceramic. |
| No surround-sound menus. | Check ribbon cables to Dolby PCB. Try factory reset. |
| Power supply tripping. | Check U11, U12, D54 on Dolby PCB. |
| No audio. | Check U18 and U22. Try power-down reset. |
| Real time clock gains over 30 secs per week. | Change C6 to 47pF 5% SMD. (P/N 155-4705551). |
| SMPS FET s/c. | Check D54. |
| Whistling noise from PSU. | Replace C9. |
| No front panel display. | Replace Q5 on front panel PCB. |
| Diagonal lines - worse via RF. | Replace C13 - 100uF 50 volt. Replace C10 - 100uF 35 volt. |