LCD Repair HowTo
Contents
Warning
DO NOT ATTEMPT THIS WITH OUT STAFF
Changing Caps
Temp rating should match.
Volt can be higher, as is the uF, don't go too high on the uF as it can cause issues.
LCD waiting for parts
Our current LCD wait list for LCD's waiting for parts.
Useful LCD Links
A good list of models and their panel, good for part swaping http://www.tftcentral.co.uk/search.php?query=&select=model
Models that have been successfully repaired
BENQ
FP731
OPEN - Starts from bottom, middle(blade), then guitar pic to corner. Blade again at corner 2" in.
- Lift bail bar to remove signal data cable
DIAG - NO PWR
Mod#Q7T3, Manf. Jan 2005
Problem - Solder lugs for AC in arc'd out and burned away solder. Whole connector fell away from PCB when dissembled.
Solution - re-solder plug
FP757
OPEN - Remove the two screws above base on back
- slide 'down' stand, stiff, but slides out
- remove 3 screws at bottom
- start at bottom, guitar pick around edges, top last
- unplug control panel cable from side
- clips hold lcd inut to front, start from sides and unclip, lift out
- under metalic stickers are a total of 4 cables to undo, 2 connector for lights (round wire) and 2 flat ribbon cables, to release the ribbon cables gently pull up the dark bar, it will hinge up and the ribon cable will slide out
- remove the 4 scrws around the edge and lift circuitry away
- remove pcb screws and clips around edge, both circuit baords, you also have to remove the nuts for the video connector
DIAG - Power light blinks, no picture
Mod#Q7C3, Manf. nov 2003
Problem - bad caps, specifically C707 and C709. Other possable points of failure: broken solder leads on D701, D702, IC701, and Q601. caps C751, C712, C703
Solution - replace caps C707 and C709. (both 16V/1000uF, ok to use 25V/1000uF)
Prevention/life-extension - resolder leads of D701, D702, IC701, and Q601, put a loose sheath (fiberglass works good) over C707, C709, C751, C712, C703 (can be held on with a dab of hot glue)
LG
1350S-P
Flatron Model#1350S-P Date 2004 two 470uF 25v caps blown. Be careful on the video connect cable, pins bend easy.
ViewSonic
VX510
- one blown cap
DELL
1500FP
- Power Supply rectifier replacement - 4 amp fuse blown
Optiquest
VS11201
Series Q9 Model#VS11201 Man. -Oct 06
- replaced C829 capacitor 1000uF 16v
Remove 2 screws near the place where stand is attached. Use blade to open case.
Power supply PCB is under the metal box.
Radioshack sells 1000uF 35v capacitors for $1.59
Swollen capacitor:
RS replacement:
Unsuccessful repairs
ViewSonic
VX924
Mfr. dec 2005, interior panel#M190en04 05/45 P/N-59.19m04.010/b
Problem - 3 blown caps. 470uF 25V(C661, C664), 330uF 25V(C662 w/ heatshrink tubing close to xfrmr)
