| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Jvc | AV25S1EK | Field collapse | Resolder TDA3654 as joints appear good but on application of soldering iron show to be dry | ||
| Jvc | HRJ205 | Dead, no negative voltages on psu connector | Check R32 100 ohms in psu for o/c | ||
| Jvc | HR-S4700EK | Intermittently crunches tapes on eject | I 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 judder | Excessive take up tension! Replace take up clutch item 25, Pt no PQ46323A-1 | ||
| Jvc | C-V14EKS/B/W Onwa | No Red | I 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 only | R323 6k8 5w fusible res o/c connects pin 42 of IC301 to HT rail | |||
| JVC | SX2, TS2 | Crackle on NICAM | Replace SAWF with pt no CE42606-T01 | ||
| JVC | S2180M | Field collapse | Check UPC1488H FOP chip & supply to it - if missing, check cp IC 10NR for o/c | ||
| JVC | Onwa | St/by only | No line feed - 6k8 2w resistor in middle of pcb discoloured & o/c | ||
| JVC | Onwa | Sound int & paired lines at bottom | R434 0R68 ½w hi res | ||
| JVC | MX2 | Flyback lines at bottom of screen | Increase value of C442 from 150pf to 470pf | ||
| JVC | MX2 | Field int collapses | D441 RD3.0ES(B2) goes leaky when warm - to pin 13 TA8859P IC461 | ||
| JVC | JX | Blank raster when A1 advanced - sound ok | TDA4580 RGB vid controller chip | ||
| JVC | JA | Field scan missing from top | IC401 (fop chip) pin 4 = 14.5v, pin 8 = 42v but was low because FR553 5R6 ½w o/c. eplaced along with TDA8350Q fop chip | ||
| JVC | CY21EK | Int goes to st/by | Dry joint X401 resonator by IC401 caused int line drive |