sharp Repair Tips
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Results 804
Results 804
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| Sharp | VCA111 | Poor picture | Faulty C329 4.7uF | ||
| Sharp | DV3760H | Will not work, standby red LED flashing | C604 in the 12V line is bad | ||
| Sharp | 37DT-25S | Dead, fuse ok | Replace Q701 P3NA80FI with a P4NB80FI-mbr. Check Q702 BC338. Replace R703 5,6E, 5W, all components in supply. Check print for poor contacts | ||
| Sharp | 51DT-25H | NVM modification / symptoms such as no video, tuning drift & reduced height from cold | Fit 2 zener diodes part no. RH-EX0404BM22 in positions D510 and D511, fit coil part no. VP-CF120K0000 in place of link J122 and fit zener diode part no. RH-EX0412BMZZ in position D403 | ||
| Sharp | 66GF-63H | Blank grey raster with flyback lines,sound present and ok | Check pin 2 on connector H on tube base for 12V if high then check Q912 BC337 for o/c | ||
| Sharp | DV7045SN | No vertical deflection | R615 open 0.13 ohm 1/2W. Also resoldered many bad solder joints | ||
| Sharp | DV6632H 4BS-C | Led changes from green to red, fails to start up, no EHT but secondary voltages in psu ok 150V ok | Check Q601 and Q606, these are Q600 LOPT drivers, there should be 2V P-P on base of Q606 and 150V on collector of Q601, replace Q606 with a BC182 check pinout | ||
| Sharp | 6GF63H DA-50W | Noise from speakers / center speaker even with the volume set at minimum | Replace IC1300 BA4558F 8pin smd and IC1302 TDA7480 which are both located on the central speaker amplifier plug-in PCB | ||
| SHARP | 20R12 20S02 | Apenas nos canais altos apresenta saturação de vídeo quando se tem imagem branca ou mais clara, distorsendo e/ou riscando nas partes brancas. | C659 | ||
| Sharp | C2015P | Vertical line in the middle of screen. Vertical IC defective. Type: X0238CE | Replace with a common uPC 1378. (Fully compatible) | ||
| Sharp | VT3700H | Won't tune. | IC1005 , R760 IC1005 Sharp RH-IX0249CEZZ R760 220ohm , Sharp VRG-RF2EB221J | ||
| Sharp | VT3700H | St/by only | L752 burnt up - replace all smis in the line concerned | ||
| Sharp | VT3700H | Off tune on timer recs | VT supply to tuner rises when tV in st/by - IC005 33v stab RH-IZ0249CEZZJ | ||
| Sharp | VT3700 | No sound/pic - tape stuck in | R761 1R fusible o/c, Zener D757 15v s/c, L752 o/c & check ck caps in psu | ||
| Sharp | VT-2198B | unable to reduce vol to min - OSD OK | R1090 12k 0.25w on daughter pcb | ||
| Sharp | SV287XH | St/by only at sw on with burning smell | R518 2R2 smokes due to fop chip IC501 LA7831 faulty - caused by C521 & 522 100µ 35v o/c | ||
| Sharp | SV287XH | Blank raster/no sound - OSD present (RF & Scart) | Switching [video and audio] is performed by IC401 [M51321P] a three gang three way device. pin 15 of the IC works on a tristate level. With the IC supply being 12V: 0 - 2.5V Input from BNC; 5 - 7V Input from scart ;9 - 12V Input from tuner. Diode D419 [DX00458M] which links to the wiper of the AGC preset was leaky, limiting the voltage on pin 15 to 7V and thus preventing tuner mode selection. Replace D419 with an IN4148 | ||
| Sharp | SV2589 | Red tint at top of pic & slight vert jitter | C636 330µ dy joints | ||
| Sharp | SV2589 | INT RED TINT IN TOP 2/3rds OF PICTURE | C636 DRY CHECK DIODES ON HEATSINK ALSO | ||
| Sharp | SV2589 | For PSU problems. | Resolder diodes attached to PSU heatsink. |