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Monday, September 15, 2008
Samsung tips
Bad solder @ C310, 312, 325, 326, 329, 331, 361. Or use p/n 2203-0022793. Ceramic chip 1uf/25v CXB1922
*Buzz from power supply
*Dead, power light blinks
*Check power supply caps, Q1, Q2, C09 & C810 on TV PCB, 470/16v
*C09(22uf BP) in VCR power supply CXC1313
Shuts off in pl, ff, rew
Replace reel sensors and
CXJ2512
VCR runs fast in SLP
IC601
MVR2000C
Audio/video fade out
Q106 on main board, in center, 1in. from back. Remove glue.
MVR2100C
Shuts down
No B+ regulation, replace C810 in primary SMPS.
MVR3150
VCR not working, no play/eject
C09 22/16v in power supply.
VM3105
*Vertical trouble, Hor lines at top/bottom
*Sound comes/goes, tap on VCR to cause.
*Resolder D307, next to vertical chip KA2131 and vert pins
*Resolder CN302, IC304 pins on VCR pcb, check all solder in audio section.
VM3003
White screen, no operation
Poor solder, Q106, VCR board, power supply
VM6003
No TV mode pic, ejects cassette, drum doesn't turn.
Bad solder Q106
VM6105
No TV reception/VCR normal.
IC301(LA7323)
VR1000
Counter doesn't advance, shuts down after 3 secs
Chip D75104CW027
VR2310
No reel pulse @ micro
R642 open
*Video drum over speeds
*No capstan movement.
*Drum motor spins too fast, shuts down.
*In play, pic pulses from good to snow.
*No load or intermittent
*Eats tapes, capstan not rotating
*Repair connection from head circuit to fg coil.
*Check D112, replace 10 uf cap on capstan pcb, repair traces.
*Loose connections, drum stator pcb, esp. J2, J3
*Adjust AC head, replace 10uf cap on capstan pcb.
*D112, 12v supply.
*C6, 10/25v, capstan pcb, repair trace
VR3602
Won't load, unload cassete.
Side plate, cassette-221066.
VR3604
Dead, no display
C09-22/16v BP, in power supply
VR3700
*No sound on p/b or TV
*Spills tape in unit, bump unit and snow.
*Drum has no torque.
*Repair broken traces to audio pin on RF
*Mode switch, solder W381
*C102 in power supply
VR3702
No functions, has display, won't accept tape.
C25, 22/16v, in power supply.
VR3705
No power, humming from power supply
43v zener, in secondary of power supply
VR3803
*Clock blinks, no power up
*Dead
*C09-22/50v, BP in power supply.
*C09, 22/50v BP in power supply
VR5604
Dead, open fuse.
Q1(2SC5039F), Q2(KTC3203Y), C4(4.7/200V), C9(22/16vBP)
VR5608
In safe mode
Hold TV/VCR, on remote for 30 seconds.
VR5702
Display flashes, won't accept tape.
C09, C04, C14, in power supply.
VR5703
*Dead, or flashing display
*When inserting tape, light goes out, tape doesn't load.
*Power pulsates on/off
*C05, C09, C14 in power supply
*33V power supply line is 7-9v, replace transformer.
*C14 (47/50v) in power supply
VR5704
Dead, fuse open
Q1(C5039F-218959), Q2(KTC3203Y--212671), C4(4.7/200v), C9(22/16v-np)
*Tape loading, head wheel not spinning, very slow cassette load & tape eating. OR>
*Intermittent bad color, ver/hor sync, then blue screen. OR>
*Not completely ejecting D114 cathode should be 14 volts.OR>
*No capstan in Play -D114 cathode should be 14 volts.OR>
*Unit is dead (D1103, D1104 cathode should be 9 volts.)
*Will go into play, but returns to stop. Tape not taken back in. D110 cathode should be 13v in play.
For all of these:
Use RCA kit #216135. Includes 7 diodes, 1N4001, D1103, 1104, 108, 109, 110, 112, 114
VR5802
Intermittent & won't timer record
Resolder front button mountings, re-solder tape end sensors.
VR8700
Intermittently dead
C16(330/35v), C17(1000/35v), C21(1/60v)
VR8702
*Looses power when tape is insertd
*Broken slide and carriage(won't accept)
*C09-22uf
*RCA #221066, basket #221563
VR8704
Dead, heating power supply restores
Q01, 2SC4418(Upgrade)
VR8803
*Slow to power up, display erractic or dead unit.
*Dead
*CP09(22/16v BP) in power supply
*IC1(PC817), IC2(S431C), R14(100 ohm) in power supply
VT3240
*Capstan errractic, slow.
*Dead
*Defective cap in 6v line of p/s-220/16v
*C04, C09, ZD6(30v zener), check D04 all in power supply
VT3260C
*Doesn't load tape, clock flashes
*Dead, no display
*22uf cap in p/s, replace with 33uf
*C04, C09, ZD6(30v zener), ZD4(18v zener) in power supply
VT4240C
Dead, no display.
C09, C04
VKX306
Dead
C35(470/16v) in power supply
so this was all about samsung how to recover it.
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