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EU648 / TEAC [TV 70-74 (66-70) cm picture]

The EURAS repair tip database for professional technicians and service engineers supplies the following faults for EU648 / TEAC.

List of fault symptoms:
  • Vertical collapse. (EU648 tips)
  • Slow start-up.
  • Switches channels automatically upwards. Maximum volume.
  • Stretched picture. intermittently.
  • Fuse (2.5A) is intermittently defective.
  • White picture with flyback lines from time to time.
  • No picture. Audio OK .
  • No picture. Red, green or blue raster.
  • No focus.
  • Switches off by itself.
  • No raster (intermittently).
  • HV builds up and then collapses. (service info for TEAC -EU648)
  • PSU does not start up correctly.
  • B+ voltage (+140V) missing.
  • Stuck in standby. Tripping noise at first switch-on.
  • Switches to protection mode. after start-up. (EU648 tip from TEAC)
  • No 15V, 8V and 5V voltages.
  • Flyback lines. after warm-up.
  • Squealing noise.
  • No picture. on lower half screen.
  • Dark picture.
  • Tripping at switch-on. Popping noise from speakers.
  • +B voltage is 160V instead 145V.
  • PSU collapses and trips as soon as appliance is swichted to full mode. Standby OK.
  • Cracking noise in standby.
  • No TXT.
  • Brightness varies. intermittently. (EU648 TEAC repair tip)
  • Mains fuse blows sporadically.
  • Set trips at switch on.
  • Volume decreases to min.
  • Poor picture, exaggerated contrast and colours, brightness varies.
  • Poor picture. (TEAC - EU648 information)
  • No start-up from standby. LED is red when switching.
  • Geometry adjustments.
  • R528, R530 and C524 defective.
  • PSU blown after power failure.
  • Power supply blown. Mains fuse black. Possible lightning strike.
  • No 8V and 5V voltages.
  • Red and green area on every side of the screen when warm.
  • Popping noise when switched off.
  • Snow in picture.
  • No vertical deflection. Only a horizontal line at top.
  • Horizontal line. Black screen. on lower half screen.
  • Poor picture. after start-up. (service info for TEAC -EU648)
  • Not storing programme data.
  • Dead. Standby LED does not light.
  • Flyback lines. intermittently.
  • C619 burned.
  • Reduced vertical size. Vertical foldover. when cold.
  • Blurry picture. (EU648 tip from TEAC)
  • Tripping.
  • Switches to standby. intermittently. No start-up from standby. intermittently.
  • Mains fuse is defective.
  • +B voltage is 20-80V instead 145V.
  • Volume increases to max. (TEAC - EU648 information)
  • White lines.
  • Horizontal collapse. intermittently.
  • Flyback lines.
  • Protection mode activated. in standby. (EU648 tip from TEAC)
  • Switches to standby. intermittently.
  • Tuning drifts.
  • Squealing from PSU (intermittently).
  • Trips. after start-up. (EU648 tip from TEAC)
  • Picture comes in after approx 1 min when started up from standby.
  • Changes picture size when increasing audio volume.
  • No picture or sound via AV1. AV2 and AV3 ok.
  • No power.
  • PSU pulsates.
  • No functions.
  • Low tuner gain but can be tuned in.
  • Line tearing. intermittently. Squealing noise.
  • C530 fails repeatedly.
  • PSU lamp test.
  • No vertical deflection.
  • No picture (intermittently). Audio OK . (EU648 TEAC repair tip)
  • Picture rolls.
  • No HV.
  • No picture, only snow.
  • White balance adjustment.
  • No luminance.
  • Stuck in standby.
  • No picture. intermittently. OSD OK .
  • Trips.
  • Line output transistor fails repeatedly.
  • Low contrast.
  • No picture. intermittently.
  • Beeps now and again.
  • Dead. (service info for TEAC -EU648)
  • Noise on some channels.
  • Poor focus. (TEAC - EU648 information)
  • Cycles on/off. Knock sensitive.
  • Picture shifts.
  • Brightness varies.
  • Switches to standby at start-up. LED flashes 2 times.
  • Distorted audio. via speakers.
  • Picture gradually disappears after start-up. Flyback lines, poor picture content.
  • Trips. at start-up.
  • PSU pulsates. Standby LED flashes .
  • Shuts down (intermittently).
  • Enter service mode.
  • PSU pulses and there is popping from the speakers before set trips back to standby.
  • Top quarter of screen is lit. Rest of screen is black. (EU648 tip from TEAC)
  • Picture shifted to the left about 1 inch.
  • Upper part of picture is fuzzy and messed up, after was powered off for a few hours.
  • Vertical lines.
  • How to test the PSU using a lamp.
  • No picture. intermittently. Audio OK .
  • No start-up.
  • Flyback lines appears when brightness increased.
  • Horizontal output transistor fails repeatedly.
  • No synchronisation. No TXT.
  • Excessive brightness. Flyback lines.
  • No REC.
  • AGC adjustment.
  • Picture size varies with picture content.
  • Stripes in upper picture.
  • No RC functions.
  • No start-up from standby.
  • Coloured spots on the corner. (EU648 TEAC repair tip)
  • No vertical deflection. on lower half screen.
  • Pulsating picture. Picture shrinks horizontally and expands vertically when changing brightness.
  • No audio.
  • No audio. No game. No calculator.
  • Some channels missing.
  • Horizontal line.
  • No tuning.
  • No AV.
  • Black screen. after a few seconds. (EU648 tip from TEAC)
  • No picture.
  • Black dots on the screen.
  • Reduced horizontal size. No E/W correction.
  • Vol up/down buttons change program number. (EU648 tips)
  • Spots on the screen during shut off.

With help of this list a solution is found often when TEAC EU648 fails.


Additionally to repairtips or service information EU648 is linked to 60 components (IC's and/or transformers) in the Tectra database, through which you can identify electrical compatibilities (crossreferences) in appliances.


Chassis information is available (which chassis is built in into EU648 ).

EURAS system also knows 747 appliances having the same chassis as EU648 and can easily list them.

In the repair discussion pinboard for EU648 there are 69 replies to questions asked about 82 different repair problems.
With access to EURAS you can all read them or enter your own questions and get help for EU648 from EURAS technicians or other users.

Do you want to see this remedies/cures for repairtips?   Register here for the EURAS System
Please note: access to the EURAS System can be granted only to professional household electronics repair shops/technicians/Video/TV which are authorized for service by a manufacturer, or can prove to be professionally certified to do repairs on electronic appliances. You will be asked for a statement and information accordingly during registration.

If you do not qualify as stated above and you have an appliance that needs technical service, we do recommend you to contact the manufacturer (for example through his website) or go to a professional TV/household/Video electronics repair shop close to you.

Already registered? open EU648 TEAC in EURAS

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Last updated: 07. Oct 2008 19:58:01 MET, doccode ISO9002AS168EKA200805C EURASMOP

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