TV Repair: Common Faults and Solutions.
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Results: 87425
Results: 87425
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | SLHF900 | A'-ch, b'-ch pb freq resp adj is incorrect | A', b' freq. response adj. is incorrect. unable to adjust5.1 mhz level of rf sweep signal. | ||
| SONY | SL5200 | Would not go into eject mode | Unit was being serviced by our san bruno fsc. the sx-1 boardwas replaced because it would not go into eject mode. with new sx-1 boardunit would go into eject mode only from pb or ff or rew modes. it wouldnot eject if eject button was pressed after it | ||
| SONY | CDP7F | Intermittent or no playing of discs | Focus is not achieved during the search mode. sometimes theunit will play if inverted. c805 becomes leaky and allows pin 16 of ic204(cx-20108) to be biased more positively. consequentially the objectivelens cannot search close enough to a disc surface | ||
| SONY | CDP35 | Constant low level illumination of unused display sections | Sections of the fluorescent display tube not in use remaindimly lit at all times while the unit is on. d914 shorts allowing ac fromthe power transformer secondary winding to modulate the display drivers-24v power line. i have seen this twice in a cdp-4 | ||
| SONY | XR550R | Head deck continually cycles in and out | Cycles direction continuously. k. f. cam gear on ref.no. 114, will not latch the direction change. gear was worn at the pointindicated. | ||
| SONY | TCM6 | Add model # to s/b | Service bulletin #208 (tape recorders) should include tcm-2,tcm-17 and tcm-19/v. they both have the ref. #'s reversed, and the samep/n belts. -hq comments: we will publish a revised s/b. | ||
| SONY | TCWR730 | Unit would auto reverse while playing a tape | Customer complained unit would auto reverse while playinga tape. deck also had mangled some tapes. | ||
| SONY | D3 | Service manual error | Page 14 of s/m shows the 1/2 vcc test point incorrectly.the correct test point is just slightly to the right on the diagram, andlabelled tp (vc). please see attached copy of page 14. -hq comments: i wrote a s/b as soon as i talked to you on the phone. | ||
| SONY | WMF200 | Missing p/n - door lock lever | Need part number for door lock / release lever. | ||
| SONY | XR47R | Mislabelling of power pcb | Audio power amp ic is declared as ic801 (printed directlyon pcb) yet parts list does not show a ic801. my guess is that this isic701. is this supposed to be a ta7271? installed 8-759-204-35 (ta7271)but unit motor boats. -hq comments: the ic should be | ||
| SONY | KV2145R | Missing part no, d512 8-719-305-15 | Pc board silkscreening has two reference no.s d512, one isshown on mounting diagram in s/m. however there is no part inserted.the other d512 is inserted between c533 and c534 (see attached) andappears to be a d177 case design. an earlier run (s/n 24852 | ||
| SONY | XRA33 | Problems with replacement circuit board | Am channel spacing 9khz fm tuning doesn't work am stereodoesn't work. found extra diode in circuit (see attached sheet). foundc8 bad (shorted). found l54 bad (incorrect part). (reason for replacingboard: extremely intermittent am tuning problem). | ||
| SONY | KPR4110 | Dead, replaced ic-5001 | Dead set. no 135v, +18v and -18v. replaced dc-dc converter,won't help. then applied 50v dc to 135v found 0v at pin 11 ic5001. dc-dcconverter input should be +143v and -143v. training manual indicated+295 and -205v. | ||
| SONY | PSLX255 | Tone arm doesn't move | Slide arm (473) pin disengages from slot in clutch cam gear(460). | ||
| SONY | KV2771R | Cracked board | Board cracked and portion of pc board broken off wheresink for ic651 attaches to pc board. -hq comments: no physical damage appears on cabinet parts. | ||
| SONY | HVC2200 | Black vertical line in pix | Diagonal thin vertical black line about 20 degrees from theperpendicular. it looks as a crack. would in the monitor face plate. itis hard to lock and view on a conventional scope as it occurs every otherhorizontal line but can easily be seen in the ex | ||
| SONY | CCDV110 | Ccd-v110 flex connectors between me-4 and cd-18 boards | Need these two flex connectors. are they available? -hq comments: these connectors are w702 and w704. we are checking withtokyo on availability and will advise.*connectors are available in rpc and will be available shortly in kcp.p/n is 1-558-805-12. | ||
| SONY | SLHF1000 | Control l and control lf compatibility | Can the sl-hf1000 be used with the rme-50 from control l tocontrol lf. -hq comments: the basic play, ff, rwd, eject, etc. can be used becausethe command formats for control l and lf are the same. however theediting feature cannot be used because the rm | ||
| SONY | SL250 | Unstable pix, jitter | Poor vertical stability. low output from ic303 pin 7(ctl amp). | ||
| SONY | BMC550 | No drum rotation | No drum rotation when record button pressed. |