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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 244
AiwaVX9142KDeadR516 270k in psu o/c14-09-04
AiwaVXD1420Pin code removalEnter wrong no 3 x, then press Vol- on set & "7" on R/C for 5 secs when "protected" appears14-09-04

AiwaVXG142No raster - OSD OKQ1029 near tuner14-09-04
AiwaVXG142KDead - no st/byR516 270K, IC501 TDA4605-3, Q500 2SK2397-01MR14-09-04
AiwaVXG142KDead - no stbyR516 270k, IC501 TDA4605-3, Q500 2SK239714-09-04
AiwaVXG142KDead with st/by led lit - accepts a tape but no functsICP506 1A CP on tv pcb o/c14-09-04
AiwaVXG142KDead with fast tripping aft power cutC513/C538 1m 160v in psu hi esr14-09-04
AiwaVXG142KNo pic or vcr mechs - osd & sound okReplacing the faulty switching transistor Q511 [2SB926] which supplies the chroma +9V cured both faults. It is situated at the back LHS of the VCR board.14-09-04
AiwaVXG142KNo sigsQ1029 (2SC926) at rear of vcr pcb s/c - used a BD234 14-09-04
AiwaVXT1420kDeadStart up Res R502 1M & R503 820k14-09-04
AiwaVXT1420KSt/by onlyLOPTr leaky14-09-04
AkaiCT2142VNTPoor pic with fbck lines and curious colIC301 pin 12 supply only 7v5 (9v1). R424 (0R68) hi res14-09-04
AlbaCTV842Dead - no line driveLine dr tfmr o/c due to glue attack - managed to repair14-09-04
AlbaCTV842No colourCap 0µ47 connected to pin 12 of TA7698AP decoder/tb chip14-09-04
AlbaCTV842No tuningR108 10k o/c14-09-04
AstronEC142Dead.BU208A ( BU326A will do ) 22k in series with set-ht pot oc14-09-04
B & O7423 7102St/by onlyDry joints Plug P8 & 9 on control pcb14-09-04
Beko14212Tuning driftsC458 100nF sm near tuner or C460 breaking down (in parallel with C457 - not shown on diag) 0µ47 63v14-09-04
Beko28426NDSProblem is ticking BU508df(LOPTr) and flashover on EHTpiller from LOPTX. Can i be informed of any other associated components that would need replacing. The BU508 has destroyed twice. you need to replace the lopt and transistor ,then check the line drive frequency-there is a fault which increases the line frequency and there are certain mods which may need to be carried out. you should have a working set one the lopt and line transistor has been replaced.Try the wimtv site for mor info if you have more problems12-12-05
Bush1427TBlue screen with fb lines18k on crt base14-09-04
Bush1427Tbright screen with fb lines check crt cathodes - if low at 100v check R435 0R68 safety res14-09-04
Bush2420sound muting on some chans & no search locksync pulses at Q403 varying - base bias res R424 750k o/c14-09-04

CrownCTF142 RSLCrown CTF142 TV when powered on displays a white horizontal line in the center of the screen. Upon inspection i discovered that Resistor R625 was fried. However i cannot see the code as it has burnt away. Id be greatfull for any help. Also would i need toreplace vertical ic w/ corresponding passive components like cap./ resistor r625 is fusible resistor like 0.5 ohm.25-06-05
DaewooCP420 GB14F7T1Int reverts to st/byRLY2 relay was operating when fault occurred - IC I807 (TOP210-PF1) the standby switch mode IC in the power supply 14-09-04
DaewooGB14F7T1 CP420St/by onlyR804 47k start up res14-09-04
EtronEC142Dead.BU208A ( BU326A will do ) 22k in series with set-ht pot oc14-09-04
FergusonICC17 M8422UDead with mains fuse blownDP06 BZW04-342 across mains rect cap (not shown on all cct diags)14-09-04
FergusonM8421U ICC17Dark bands running up screen with corrugation/pulling in the bandsFit Line output transformer kit (35096370) Notes: The LOPT kit consists of a new transformer (10608640) to replace the original (10516050) for this 33" medium planartube (MP), plus a 100k 0.1w surface-mounted resistor to replace RL48 (76k8).14-09-04
FidelityZX4200Corrugated verticals.C87 ( 47uf )14-09-04
FidelityZX4200Dead - with faint ticking.D21 ( BY229P ) s/c , may be due to LOPTX being faulty.14-09-04
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