SONY - DVP S3000_DVP S7000 _DVD PLAYER_ REPAIR HELP

INTERMITTENT LOSS OF BRIGHTNESS IN PICTURE DURING PLAYBACK

CAUSE:

• Broken Video jack solder connection
• A/V Decoder IC281 broke solder connection
• A/V Decoder IC281 defective.

REPAIR

1. Check both video jacks for broken solder connections.
2. Press down on IC281 when the intermittent occurs. Resolder all the pins if the condition responds to movement. Use flux on the pins to prevent solder bridges and inspect the pins before powering the unit on.
3. If the problem appears thermal, cool off the IC to see if the brightness returns. Replace IC281.

NO COLOR OR COLOR CHANGING IN THE PICTURE.

CAUSE

• X280 (66MHz) crystal near IC281 on the main board.
• X003 (27MHz) crystal in the “can” on the main board.

REPAIR

1. Turn the unit ON. The Xtals will start immediately. Check the 66MHz. crystal by placing a scope and frequency counter (using a X10 probe) on the crystal (corner nearest IC281) or on either side of R213 that is in series with the Xtal. If the signal is off frequency or below 0.9Vp-p, replace the crystal.
2. Perform the 27MHz free run adjustment by grounding TP025 and setting RV001 for 27MHz +100Hz at TP018.

NO DVD DISC DETECTED AT START UP.  CDs MAY PLAYBACK OK.

CAUSE

• Laser assembly or Spindle motor is at end of its life.

     You should check the DVD RF level and use that to determine if the laser output is sufficient to play back DVDs.

1. Check the DVD laser output at CN760/pin 1 on the MB board. Althoughthere may not be an eye pattern because the DVD only starts to play, you should see RF at CN760/pin 1. Normally there is a 1.6Vpp eye pattern at CN760/pin 1. The minimum operating RF level is 0.9Vp-p. The CD RF test point is at a different location.
2. If the DVD RF level is above 0.9Vp-p, suspect the spindle motor. Even
   though the DVD disc spins, replace the spindle motor (P/N = 1-698-
   944-11). Often when the spindle motor is bad, the RF eye pattern is
   not clear or the waveform squeezes and expands like a musical accordion
   before shutting down.

INTERMITTENT OR DISTORTED SOUND WHEN PLAYING DVD MOVIES ONLY [NO FAULT WITH CDs]

Audio Control IC380 is defective.

Replace IC380 CXD8603BR (Part Number = 8-759-490-29).

NO PLAYBACK OR PICTURE FREEZES WHEN PLAYING PARTS ON SOME DUAL LAYER {GOLD} DISCS

• Laser getting weak.
• ROM IC093 cannot PB marginal spec gold discs.

REPAIR

     You should measure the DVD RF level going to the servo (not video) stages and use that level for making the laser performance judgment.

1. Locate TP891 (same as CN886/pin 5). Less than 0.95Vp-p means you should replace the optical assembly. Align the unit for all three disc types (CD, DVD single and dual layer).
2. If the RF level is normal at approximately 1.5Vp-p, replace ROM IC093 depending upon the model.

ALIGNMENT AFTER LASER REPLACEMENT

     The Tilt, focus, and Tracking adjustments are performed automatically from the test mode using the remote and test discs. After the test mode is accessed and “drive automatic adjustment” is entered, you are prompted to load the first DVD disc for alignment. Afterwards the screen prompts you to replace the disc with a dual layer DVD and then finally with a CD to complete the alignment. The procedure is as follows:

• Access the Test Mode by pressing the following buttons on the remote: Time, Clear, then Power.
• From the Test Mode Menu, select 1. Drive Auto Adjustment.
• From the Auto submenu, select 0. All (discs – one at a time).
• The screen will prompt you as to what disc to place on the tray and what buttons to press to complete the alignment.