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Kenwood KDCMP628 Support Question

Kenwood KDCMP628 Support Question

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Question posted by wagnecha14 on January 8th, 2018

Display Only Works Completely When Warmed Up Fully

I have no idea how old this head unit is, but when it's cold the display only half way works, but when its fully warmed up, it works 100% like normal, only the display is affected by this.

Current Answers

Answer #1: Posted by anis0012 on January 13th, 2018 3:45 AM
This answer was accepted by the poster of the original question.
anis0012

Member since:
December 17th, 2017

Points: 196,100
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It's probably in the body of the radio. There's likely a bad solder join or a loose wire, and the cold makes it lose contact. It happens in aging vehicle electronics. They're exposed to a very harsh environment for circuitry.

Related Kenwood KDCMP628 Manual Pages

Instruction Manual - Page 2

... Text Display Switching (Display Type B) Text Display Switching (Display Type C/ Display Type D) Font Color Select G-Analyzer display Switching TEL Mute Tuner features 28 Tuning Tuning Mode Direct Access Tuning Station Preset Memory Auto Memory Entry Preset Tuning RDS features 30 Radio Text Scroll PTY (Program Type) Registration of a station as a PTY Program Type preset CD/Audio file...
Instruction Manual - Page 3

...Built-in Auxiliary input Setting CD Read Setting Picture downloading Voice Index ACDrive firmware version display Unique ID display Audio Preset Memory Audio Preset Call Demonstration mode Setting Accessories/ Installation Procedure 54 Connecting Wires to Terminals 55 Installation 56 Removing the Unit 58 Troubleshooting Guide 59 Specifications 63 WOW, SRS and symbol are trademarks of...
Instruction Manual - Page 5

...affect its mechanical parts. English | 5 Reset button Reset button • We recommend the use of the display and the panel appearing in the ODD D/A System, and the digital processing is isolated and controlled separately for the first time This unit...The unit returns to explain more clearly how the controls are built-in this unit for the first time, cancel the (page 50). Normal ...
Instruction Manual - Page 8

...to "Disc at the beginning of the Audio file The Audio file is played in accordance with copy ...normally, or the file and folder names may not be displayed correctly. • Attach the correct extension for the file and the folder • Maximum number of directory levels: 8 • Maximum number of folders: 100 • Maximum number of files per folder: KDC-MP7028/MP728/MP628: 255 KDC...
Instruction Manual - Page 10

...Optional accessory) Auxiliary input Auxiliary input (Optional accessory) Standby (Illumination only mode) Display "SIRIUS" "TUNER" or "HD Radio" "Compact Disc" "CD Changer" "AUX" "AUX EXT" "STANDBY" Attenuator Turning the volume down quickly. Function of the KDC-MP7028/KDC-MP728/KDCX789/KDC-MP628 Audio Control 10 | English Decreasing Volume Turn the [VOL] knob counterclockwise. When it...
Instruction Manual - Page 11

... control this item when (page 43) is set to "SWPRE Sub-W". (KDC-MP728/ KDC-MP628 only) • *3 You can control this item when (page 14) is set to "SW ON". • *4 You can control this item when "2 ZONE" of the KDC-X789) 1 Select the Audio item for adjustment By referring to the step 1 - 3 above, select...
Instruction Manual - Page 12

... 15 - Function of the KDC-MP7028/KDC-MP728/KDCX789/KDC-MP628 Audio Setup Setting the Sound system, such as a difference from the basic volume. • Loudness: Compensating for adjustment Press the [VOL] knob. Adjustment Item Display Front High Pass Filter*2 "HPF-F Fc" (KDC-MP728/MP628) (KDC-MP7028/X789) Rear High Pass Filter*2 "HPF-R Fc" (KDC-MP728/MP628) (KDC-MP7028/X789) Low Pass...
Instruction Manual - Page 13

...SRC] button. Function of the KDC-X889/KDC-MP828 Audio Setup Setting the Sound system, such ...displayed. 3 Select the Speaker type Turn the [VOL] knob. Internal auxiliary input • The Dual Zone System can be used only when you have set the rear speaker to any mode other than "None" in the (page 15). • When the "2 ZONE" is ON, each of the KDC-MP7028/KDC-MP728/KDCX789/KDC-MP628...
Instruction Manual - Page 14

...you can recall it 's ON, "SW ON" is displayed. • You can control this item when (page 43) is set to "SWPRE Sub-W". (KDC-MP728/ MP628 only) • You can control this item when ... "S.F.C". • * The following adjustment items can be adjusted when (page 14) is pressed, the adjustable audio items are switched among ranges of each channel. 14 | English Refer to (page 18). • "SW...
Instruction Manual - Page 15

...) -12/-18 dB/oct Subwoofer Low Pass Filter Center* (KDC-X889) 30 - 100/120/150/180/220/ 250 (Hz)/Through (KDC-MP828) 40/60/80/100/120/150/180/ 220 (Hz)/Through Subwoofer Low Pass Filter Phase* Reverse/ Normal DTA Front/DTA Rear DTA Subwoofer* 0 - 20.33 (feet) Position Setting Front-L/ Front-R/ Front/ ALL 2 Select...
Instruction Manual - Page 16

.../ 80/ 100/ 120/ 160/ 200 (Hz) Band2 250/ 315/ 400/ 500/ 630/ 800 (Hz)/ 1 (kHz) Band3 1.25/ 1.6/ 2/ 2.5/ 3.15/ 4 (kHz) Band4 5/ 6.3/ 8/ 10/ 12.5/ 16 (kHz) • To get the best sound, first set on the (page 10/12). • Each setting value is displayed above the [3] (KDC-X889/MP828)/[1] (KDC-MP7028/MP728/X789/MP628) button. Refer...
Instruction Manual - Page 17

...8226; When "2 ZONE" of (page 13) is an effect by DSP. Each time the knob is displayed above the [4] button. "Through": There is ON, you cannnot select "WOW". 4 Select the WOW ...KDC-MP828 WOW Control 1 Select the source for adjustment Press the [1] - [5] button. "Bypass": There is no effect by DSP. 5 Exit Bypass Control mode Press the [6] ("RTN") button. • When it is displayed...
Instruction Manual - Page 43

... data and this unit's display automatically when the vehicle light switch is removed, warning potential thieves. In Standby mode Date Mode Setting the date format. 1 Select Date Mode Push the Control knob to [FM] or [AM]. Display "Dimmer : ON" "Dimmer : OFF" Setting The display dims. The display doesn't dim. Function of the KDC-MP728/KDC-MP628 In Standby...
Instruction Manual - Page 44

... location 2 Select G-Analyzer Calibration set it up to "G-Counter: Level1". "Stop" is displayed. When the Calibration is finished, "Calibration OK" is displayed. • If you fail to complete the calibraton, "No Calibration" is displayed. 4 Start Calibration of the KDC-X889/KDC-MP828/KDCMP7028/KDC-MP728/KDC-X789 In Standby mode G-Counter Level set mode Press the [MENU] button...
Instruction Manual - Page 45

... normal central frequency 20%. Select the "Stop Watch" display. 2 Enter G-Analyzer Stop Watch mode Press the Control knob for power amplifiers that can be controlled from this unit.... the KDC-X889/KDC-X789 Other than Standby mode B.M.S. (Bass Management System) Adjust the bass boost level of the KDC-X889/KDC-X789 Other than Standby mode/ When the Dual Zone System is mid (+12dB). Display "AMP...
Instruction Manual - Page 46

Function of the KDC-X889/KDC-X789 When LX AMP unit connecting AMP Control You can be switched automatically. When a traffic bulletin starts, "Traffic INFO" is displayed it and it switches to traffic information. • During reception of an AM station when the Traffic Information function is turned ON, it switches to ...
Instruction Manual - Page 49

Function of the KDC-MP7028/KDC-MP728/KDCX789/KDC-MP628 Other than Standby mode Audio Preset Memory Registering the value setup by the ...is announced. Function of the KDC-X889/KDC-MP828/KDC-X789 Function of ACDrive disc Voice Index Setting the announcement during the play of the KDC-X889/KDC-MP828/KDC-X789 In CD mode ACDrive firmware version display Displaying the firmware version with the...
Instruction Manual - Page 50

... mode (Normal mode). • The User memory of (page 16) is changed to the value which was recalled. • The source tone memory item of the KDC-MP7028/KDC-MP728/KDCX789/KDC-MP628 Other than Standby mode Audio Preset Call Recalling the sound setup registered by the selected source. 50 | English Select the "Audio Preset" display. 4 Enter Audio Preset...
Instruction Manual - Page 61

... recording condition is scratched or dirty. ☞ Clean the media, referring to the Audio file recording conditions. The Audio file track time isn't displayed correctly. ✔ --☞ There are recorded on the unit. No CD in the changer. The CD is not completely loaded. ➪ Load the disc magazine properly. If the "Error 77" code...
Instruction Manual - Page 62

...work properly for the Sirius tuner source is contained in the CD-ROM. ➪ Make sure that a files created with a format that this unit cannot read. ➪ Recreate the file. Writing Error: Writing failed while the file was created. Reading: The unit is still displayed... it again. Unsupported File: An Audio file is played with referring to display DNPS during the CD play having ...

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