jvc Onwa Repair Tips
Search: Onwa jvc
Results 30
Results 30
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| Jvc | C14ET1EK ONWA | Picture height is reduced to 2 inches | Replace C418. It's the coupling capacitor from the frame circuit to the scanning coils. It's value is 1000uF, 25V | ||
| 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 | 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 | CV14EKS Onwa | Dead - HT present at coll of chopper tr | R919 10k additional res in series with base cct of Chopper o/c | ||
| JVC | CT14ETE1K Onwa | PSU blown | Replace - R 915 39R 7WATT; R914 0.33R 2WATT; R902 2.2 3WATT; R901 4R7 5WATT; R911 12R 1WATT; R912 27R 2WATT; R913 22OK 1WATT; Q903 2SC1815; Q901 2SC1815; Q902 2SB744; Q904 2SD1545 OR 2SD2498; ZD901 8V2; ZD902 9V1; D901,902,903 all BA 157's; C902 .0022MFD 2KV ? (originally .0022MFD but updated to .0039MFD)This cap was blackened & seems to have been the route cause of the blown up. | ||
| JVC | C21M3EK Onwa | No sound | IC601 micro has no PWM o/p on vol cont pin - chip faulty | ||
| JVC | C21M3EK Onwa | Field collapse, no sound after replacing C909/911 R419 & 12v Zener | R421 0R68 ½w fusible o/c; D406 s/c - used BY228 | ||
| JVC | C14ET1EK Onwa | Rapid tripping at sw on | C402 4n7 500v leaky in prot network | ||
| JVC | C14ET1EK Onwa | Dead tho' st/by relay operates | Supply of 8.5v to IC301 pin 42 missing - R323 6k8 5w o/c | ||
| JVC | C14ET1EK Onwa | Col goes aft 5 mins | Pin 12 IC301 AN5601K low at 2v (5.1v); C325 0.47mf 35v tant was fitted wrong way round | ||
| JVC | C14ET1EK (Onwa) | Dead | C909 47µ had exploded & perlace C911 47µ 50v. No Ht when replaced - R404 1R0 safety res o/c in 16v supply | ||
| JVC | C14ET1EK Onwa | Wriggling line at bottom of pic (after repairing blow up) | 12v line low at 11v - fusble res R434 0R68 had risen in value | ||
| JVC | C14ET1EK Onwa | Sync crushing with soot & whitewash pic | C113 | ||
| JVC | C14ET1EK Onwa | Poor field sync | C308 | ||
| JVC | C14ET1EK Onwa | Patterning & no colour | CF101 in IF o/c | ||
| JVC | C14ET1EK Onwa | No Txt | C020 3µ3 50v o/c | ||
| JVC | C14ET1EK Onwa | No sound with slight whistle | C106 | ||
| JVC | C14ET1EK Onwa | No sound | C110 | ||
| JVC | C14ET1EK Onwa | Int reverts to st/by | Leaky tactile switches |