Timer in windows service

[Wiizl]

I'm trying to make basic windows service that should write into application event log some text once every minute. So I'm using a timer. But the Tick event doesn't fire.. I've tried all kinds of timer1.start() or timer1.enabled=true ... but nothing works. Everything with service itself is ok- I mean it can be installed, started and onStart() and onStop() it writes event log (also custom, not only the windows default, so the writing itself works..)
So here's the code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.ServiceProcess;
using System.Text;
using System.Windows.Forms;
using System.Timers;
using System.Threading;

namespace SERVICE2
{
    public partial class SERVICE2 : ServiceBase
    {
       
        public SERVICE2()
        {
            InitializeComponent();
        }
        
        protected override void OnStart(string[] args)
        {
            timer1.Enabled = true;
            string src = "Test_Service_2";
            string lg = "Application";
            string evnt = "SERVICE2 started!";
            if (!EventLog.SourceExists(src))
                EventLog.CreateEventSource(src, lg);
            
            EventLog.WriteEntry(src, evnt);
            timer1.Start();
        }

        protected override void OnStop()
        {
            string src2 = "Test_Service_2";
            string lg2 = "Application";
            string evnt2 = "SERVICE2 stopped!";
            if (!EventLog.SourceExists(src2))
                EventLog.CreateEventSource(src2, lg2);

            EventLog.WriteEntry(src2, evnt2);
           timer1.Stop();
            timer1.Enabled = false;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            string sSource;
            string sLog;
            string sEvent;

            sSource = "Test_Service_2";
            sLog = "Application";
            sEvent = "Timer TICK";

            if (!EventLog.SourceExists(sSource))
                EventLog.CreateEventSource(sSource, sLog);
          
            EventLog.WriteEntry(sSource, sEvent);
            EventLog.WriteEntry(sSource, sEvent,
                EventLogEntryType.Warning, 234);
         }
    
    }
}

I'd appreciate any help.
Could the problem be in timer properties suck as modifiers: public, or generate members- true?
I'm using Visual Studio 2005

[nvmobius]

I don't see where you Timer is declared. It's quite possible that it's losing scope and being garbage collected.