jvc Repair Tips




Search: jvc
Results 369
MakeModel Ch.SymptomProblem SolutionSolutionBy:
Jvc HRD720
Noise bar in playback, looks like error in the guides adjustmentThe problem is the 3.3uf capacitor in the drum motor. This generates Pg signal errors. Replace it and give me a smile !
Jvc AV25SD4EK
Standby LED changes from Red to Green as normal, but no picture or sound. Set appears not to come out of standbyCheck for dry joints on the line output transformer tags. Resolder all as a precaution anyway
Jvc HRD750
DeadThis was due to C14 1uF, 63v in p.s.u being faulty, replaced with a 2.2uF, 63V
Jvc AV21F1EN
Channel reception lost if tuner socket movedDry joints on IC522, IC521 and IC541 located in the big heatsink about middle of the main pcb
Jvc C14E1EK
Dead, in standby, HT present at relay RLX401, no 12 volts at C419R425 5.6ohm o/c, ZD402 12 volt zener s/c and C426 2200uF, 25volt faulty
Jvc HRD560
3/4 of the playback picture is snow may look like duff heads!Check 3.3uF,50v capacitor on lower drum motor pcb, this is an smd type but can be replaced with standard cap mounted on its side and tilted downwards slightly to clear mech
Jvc AV-S250EKT
Set dead. Faint whistling noise on switch on. No standby LEDReplaced STR1006, no dfference. Line O/P Transistor OK. 36 Volt Zener, D614 found to be short. This zener is on the secondary of Xformer, T601. This short causes the 12 V start up supply cct, which includes STR1006 not to come on
Jvc C14ET1EK ONWA
Picture height is reduced to 2 inchesReplace C418. It's the coupling capacitor from the frame circuit to the scanning coils. It's value is 1000uF, 25V
Jvc HRJ265
Capstan motor intermittantly stopping and startingReplaced motor
Jvc HRJ610
DeadTransistor Q31 in PSU leaky
Jvc C14E1EK
Tuning drift,worse at high channel no'sDry joints inside tuner unit, connections between edge of pcb and lugs
Jvc AV28WZ2
Blank rasterReplace defective TDA6111Q for Red, Blue and green
Jvc HRD750
Tracking does not lock. Picture runs up and down occasionallyVery Small electrolytic caps on the drum circuit board must changed They may be the bigger can type, if you don't find small ones
Jvc AV25S1EK
Field collapseResolder TDA3654 as joints appear good but on application of soldering iron show to be dry
Jvc HRJ205
Dead, no negative voltages on psu connectorCheck R32 100 ohms in psu for o/c
Jvc HR-S4700EK
Intermittently crunches tapes on ejectI had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
Jvc HRJ235EK
Rubbing noise at start of full tape with horizontal picture judderExcessive take up tension! Replace take up clutch item 25, Pt no PQ46323A-1
Jvc C-V14EKS/B/W Onwa
No RedI was hoping the nvm had become corrupt and turned the red drive down but it was fine To enter service mode press and hold vol up and vol down on the front panel and switch set on. Thankfully ZD405 8V2 had expired almost s/c and removed the red
JVC
Dead - st/by onlyR323 6k8 5w fusible res o/c connects pin 42 of IC301 to HT rail
JVCSX2, TS2
Crackle on NICAMReplace SAWF with pt no CE42606-T01