Please read. Everyone keeps writing the same thing, without reading the description.
Put in new PCB SUB to fix convergence (fixed)
But Red CRT is now dim (all connections checked)
Screen controls are located directly on each CRT board, NOT the Focus block. (Focus controls work)
Screen control wire from PCB SUB directly goes to Red CRT first, then Green and Blue complete the series.
Tried to adjust the Red CRT screen control dial so red is not dim. (No response).
Green and Blue CRT are fine in brightness, but their screen controls do not work also, probably becuase they are in series with Red.
MY QUESTION: How do I diagnose, why the screen controls do not work. I need increase the Red, so it is not so dim. Or do I have other problems. Someone mentioned to me the 220V line....
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3,130 Answers
Re: Red CRT is dim....
Yes I did. You will need to get a service manual for this TV set to trace the voltage coming from the sweep power supply. If this is a problem that is new after you replaced the convergenbce4 board, you for sure have a broken wire or connection somewhere in the set. Have seen this happen may many times after a novice repairs a TV set. Good Luck
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It is very simple all you need is. Imports Microsoft.Win32 Public Class Form1 Dim reg As RegistryKey = Registry.LocalMachine.CreateSubKey("Software\MyApp\", RegistryKeyPermissionCheck.ReadWriteSubTree) Dim regKey As RegistryKey = Registry.LocalMachine.OpenSubKey("Software\MyApp\", True)
Private Sub SetBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SetBtn.Click regKey.SetValue("KeyName", "Path") End Sub
Private Sub GetBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GetBtn.Click Dim Path As String Path = regKey.GetValue("KeyName") End Sub End Class
1 read the manual,2 look under convergance,3 follow the instructions.if you can not do 1,2 or
find a hetrosexualman that can read and make him dinner.If you do not have a manual look up the manufacture and you will be able to down load one for free.
Imports System Imports System.IO Imports System.Data Public Class SaveImage Shared Sub main() Dim o As System.IO.FileStream Dim r As StreamReader Dim gifFile As String Console.Write("Enter a Valid .Gif file path") gifFile = Console.ReadLine If Dir(gifFile) = "" Then Console.Write("Invalid File Path") Exit Sub End If o = New FileStream(gifFile, FileMode.Open, FileAccess.Read, FileShare.Read) r = New StreamReader(o) Try Dim FileByteArray(o.Length - 1) As Byte o.Read(FileByteArray, 0, o.Length) Dim Con As New _ System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.3.51;Persist Security Info=False;Data Source=Test.mdb") Dim Sql As String = "INSERT INTO images (Pic,FileSize) VALUES (?,?)" Dim Cmd As New System.Data.OleDb.OleDbCommand(Sql, Con) Cmd.Parameters.Add("@Pic", System.Data.OleDb.OleDbType.Binary, o.Length).Value = FileByteArray Cmd.Parameters.Add("@FileSize", System.Data.OleDb.OleDbType.VarChar, 100).Value = o.Length Con.Open() Cmd.ExecuteNonQuery() Con.Close() Catch ex As Exception Console.Write(ex.ToString) End Try End Sub End Class
The tube should be ok its the IC's regulating the convergence is your problem . A tv repairman should be able to repair it fro around $250.00 - $300.00 or less depending on who you call. Good luck
A man with your experience won't need photos.
1)locate center PCB--has large heat sink--
2)using a hook tool,gently lift board edge connectors.Go slow,be gentle.
3)remove all connectors to center board (unplug)
Don't worry about getting them mixed up--we
have a saying--they are idiot proof.
4)remove all center board hold-down screws,includes two in sister board shield and
three difficult to access in large heat sink shield.
5)gently lift PCB up and to the right while
releasing hold-down plastic tabs on the front e of PCB.Replace STK IC's.Throw it in reverse-done
thr focus block assy.has the screen and focus controls on it it about 3"x3" in size has red wires attached to it and one feeding form the flyback transformer to it.
It is a good possibility you damaged something on that PCB that had the IC's, I like to use an upgraded chip the STK394-160e that is designed for HD signal stresses. I dont know why they ordered the convergence board but I suspect it would have been ok, there are also 2 jumpers that need soldering JW10 and JW50 that supply power to the chips and they REQUIRE resoldering or it will fail again. Might try reseating the RED CRT board, check for cables that you may have unhooked to see if they are not seated in their sockets properly, double check every wire you unhooked, Make sure you used a Silicone Heatsink Compound on to the back of the IC's. I dont know what all you unhooked, but check the wires going between the CRT Boards. Check for cracks in the boards to make sure they werent flexed to much. Good Luck.
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