MenuHomeAboutJestineYongRepairingE-StoreFreeNewsletterTechnicalTrainingMustHave-BLUEMETERSRepairExpertsKent’sEbooksDamon’sEbooksDon'tMissHome > Computers > DesktopComputerIsTurningOnButMonitorScreenShowingError“CheckSignalcable”DesktopComputerIsTurningOnButMonitorScreenShowingError“CheckSignalcable”ByJestineYongonDecember26,2020      OnreceivingcallfromthecustomerIhavevisitedhissitefortroubleshootingabovestatedproblem.IturnedONthePCandmonitorIcanhearsingleBootingBEEPandgreenLED(PowerIndicator)lightisON,RedLED(HDD)Blinking.ButmonitorpowerlightturnedONBlueandinstantlyturnintoorangeanderroronscreen“CheckSignalcable”.ThatmeansMonitornotreceivingsignalsfromtheCPU.Duetothismonitorlogicboardputthescreenonstandbymode.ThisprocessconfirmsthatProcessorunitisokthereisproblemeitherwithVGADisplayCableorMonitorItself.FurtherdiagnosisIheldthedisplaycableforremovingandjustpresseditbacksuddenlyIgotthedesktopscreenpictureonmonitorIthoughtitwasjustlooseconnection.customerhasputthemonitoronfoldingtablehenceforputitbackundertheboxIholdtheCPUandonlittleJerksameerrorappearonthemonitorscreen.IthoughtitgotlooseagainsoIjustrefittedthecableanddisplayjustappearedandagaingoesoff.ThistimeIholdtheconnectortomotherboardVGAPortinthePCandjustshackedthecableonlybutnoeffectonthescreenthatmeanscableseemsoknobreakordamagedthecable.NowIdidlittlemovementbyholdingcableconnectorandproblemisrepeatingwithmovementonmotherboardVGAport.NowIturnedoffthepc.FurtherinspectionIfoundVGAportisgoingbackandforthwhilepressingthatmeansproblemisontheMotherboard.ForfurthertestingIremovedthemotherboardfromthePCCaseandinspectedthemotherboardVGAConnectoritseemsoknoPhysicaldamagefound.NowcheckedfromsoldersidethereisNosignofdrysolder.AgainpressedtheconnectorstillithasmovementmaybebecauseofithasLongLegsandthatgivesspringlikefeeling. ButIamsuredisplaycomesaftermovementofthisconnector.BymypastexperienceonthistypeofboardsIconcludedthereisdrysoldersomewherearoundthisconnector.Thisyoucannotfindoutevenunderthemicroscope.becausethistypeof