GRUNDIG VCR's

GRUNDIG 2 X 4 SUPER After An Hour On Play The Sound Goes Slow. Own Recordings Check Tape If Running Too Fast In Record; Possible Maladjustment Of Control Apb On Servo Panel. Adjust On Record For A Sampling Pulse On Every Fourth Ramp On T.P. Sm2 Adjust No More Than 10 Degrees. Check T1546, T1548, T1551, T1563 With Freeze Spray In F
GRUNDIG 2 X 4 SUPER Chewing Tapes In Rec. And Play. F.F./rew. Ok. Check If 4v On Drive Transistor Should Be 12v Possible Zener Diode D/j In P.S. Check Also R443 (390ohm) R453 And R485.
GRUNDIG 2 X 4 SUPER Drum Servo Wont Lock In; Intermittently Slows Down. Check For 32khz Ripple Across C447 If So C446, C447, C451. Should Be Changed Preferably With Manufactures Originals. (high Current)
GRUNDIG 2 X 4 SUPER Grainy Picture From Its Own Recordings. Check I.F. Preamp Tr2302 (bf324) Located In The I.F. Can.
GRUNDIG 2 X 4 SUPER Int No Braking Or Poor Braking. Check Int Relays Contacts Which Supply 12v+ At Pin 18 Of P/s.
GRUNDIG 2 X 4 SUPER Int No Record, Play Mode Ok. Check Record Safety Switch Under The Deck Front Left.
GRUNDIG 2 X 4 SUPER Int Refusal To Go Into Play Mode F.F. And Rew Ok. Check Autostop Adjustment For Misalignment
GRUNDIG 2 X 4 SUPER Machine Plays Back When Stop Is Selec. On Remote. Ejects. Change Micr I.C.
GRUNDIG 2 X 4 SUPER Neg. Pic. On E.E, Playback For 10 Min. Then Normal. R Check -22v To Modulator Low Because R477 27 K Ohm Gone High.
GRUNDIG 2 X 4 SUPER No Channel Selection Check R435 O/c In P.S.
GRUNDIG 2 X 4 SUPER No E.E Audio. Check/replace Tba120t On The I.F. Panel.
GRUNDIG 2 X 4 SUPER No Functions After Stopping In Play Mode. Check/replace Ic220. Must Replace With Original Part Sda2010 E316, Not What The Manual Says. Change Ic2640 (sm591) Along With 5 V Reg.
GRUNDIG 2 X 4 SUPER No Functions, Wont Accept Tapes. Check Relay Not Holding C446 (470 Mfd) O/c.
GRUNDIG 2 X 4 SUPER No Modulator Output. Check For -22v Supplied To D127 (zenner) If Not R25 (2.2k) O/c.
GRUNDIG 2 X 4 SUPER Playback Colour Goes To Monochrome; Colour Dist. 20 Min. Check Pin 11 Of Ic610 In The Faulty Condition, If Less Than Iv Colour Killer Is In Operation. Check/replace The Two Crystals, Ic610, Ic509 With Freezer. If Above Iv In Faulty Condition Look In Signal Circuits T 649 And Onwards.
GRUNDIG 2 X 4 SUPER Popping Noise In Sound Monitor With Noisy Picture. Check Under The Head Cover For Jammed Red D.T.T. Wires S/c To Chassis.
GRUNDIG 2 X 4 SUPER Power Supply Chopper Circuit Dead. Replace C401 If Tda4600 (i.C.) Or Bu208a Goes Faulty.
GRUNDIG 2 X 4 SUPER Snowy Picture On Play (not Heads) Check For -22v At Pin 6 Of The Modulator Connector. The -22 Comes From Pin 22 Of The P.S. If Missing Look For Craked Cct Board At Rear Of Mother Board (near Cabinet Mounting).
GRUNDIG 2 X 4 SUPER Tape Counter Gives Wrong Readings Check Optocouplers On The Reel Motors Also C228/c229 2.2 Mfd On The K.B.D. Module, If Not Change Clock Chip.
GRUNDIG 2 X 4 SUPER The Display Dosent Change When Press Prog/day Or Start/stop Check Continuity Of Key Switches And Lines To Micr. I.C. (conductive Paint On "bubble Pack" Keyboard Goes O/c.
GRUNDIG 2 X 4 SUPER Will Not Switch On Clock Displays 8's Check R443 O/c In Base Cct Of T443
GRUNDIG VS180 Int. Or No Play With Pause Light Flashing. Look For Dirty Contacts On The Brake Solenoid Switch (s4).
GRUNDIG VS180 Loads Up Then Unlaces With Both Spools Running Fast. Check/replace M722 Interfacing Chip.
GRUNDIG VS180 Mach. Would Inter. Rewind/f.F Slowly. Clock Part. Operatin. Check/replace Faulty On/off Switch (int. Leaky)
GRUNDIG VS180 Reel Motors Dont Stop When Given Command. Brakes Squeal. Check C301 And/ Or C305 For Leakage (around 10 Meg) Suspect If Round Black Disc. Variety.
GRUNDIG VS180 When In Play Mode Picture Would Int Jump For Several Secon. Check Back Tension Arm If Locking To The Optosensor.
GRUNDIG VS200 If "7" Is Displayed In Rewind With Tape Damage. Check Take Up Motor Has Tight Bearings (especially When Hot)
GRUNDIG VS200 No E.E. Picture , Prerecorded Tape Plays Ok. Check If Video Is Present At Pin 4 Of Ic810 (tda3771)
GRUNDIG VS200 No Operation. Check Machine First By Reseting
GRUNDIG VS200 Poor Reverse Searching With Tracking Bars At Top Of Screen. Check Tape Up Motors Coded Before April '84 For Tight Bearings, Also Unsecured Tape Exit Guide, Bent Tape Tension Arm. Tension Should Be 23/25 Gm/cm.
GRUNDIG VS200 Snowy Picture. Faulty Rf Amplifier.
GRUNDIG VS200 Spots On Screen In Play Mode. Suspect Grease On Motor Wiper Contacts.
GRUNDIG VS200 When In Play Mode Unit Int Stops And Unthreads. Check/replace Pinch Roller Bearings.
GRUNDIG VS220 Intermittent Or No Play With F1 Flashing In The Display Wi. Look For Dirty Contacts On The Brake Solenoid Switch (s4).
GRUNDIG VS220 When In Play Mode 3 White Lines, Displayed Bot. Half Pic. Clean Brushes Of Drum Motor.
GRUNDIG VS300 Drum Motor Goes In Reverse. Possible Causes Are; Siezed Capstan Motor, O/c Drum Motor Winding, Input Data Interface I.C.
GRUNDIG VS310 Int Chewing Tapes Check If The Gold Guide Spring On The Audio Head Is Broken.
GRUNDIG VS380 Int Operation Of The F.M. Audio Record Level. Look For Bad Solder Connection To T2049.
GRUNDIG VS380 Int Sound Erasure Look For Cracked Solder Joints In Erase Ocs Cct. (coils).
GRUNDIG VS380 Low Audio From Left Hand Channel. Faulty Input I.C. Due To Connections Being Made To V.C.R. While It Is Switched On.
GRUNDIG VS380 No Clock Display. Check Ni-cad Battery Is Not S/c. Also 32khz Crystal And Ic2080. Resetting The Ram Will Be Required.

Last Updated on 20/09/98
By Allan Simpson