I cant turn off my mesh renderer for some reason

[RPC] public void TurnOffThisRenderer() { //MeshRenderer rendered = (MeshRenderer)gameObject.GetComponent("Tank").GetComponent("MeshRenderer");

 //MeshRenderer turret = gameObject.GetComponent("Turret").GetComponent<MeshRenderer>();

 //rendered.renderer.enabled = false;
 //turret.enabled = false;

 //These objects are declared as Transforms at class level and they are found and //used throughout the code
 turret.renderer.enabled = false;
 stvol.renderer.enabled = false;

}

IEnumerator DestroyTank() {

 Network.Instantiate(ExplosionPrefab, myTransform.position, Quaternion.identity,0);

 turret.renderer.enabled = false;

 GameObject[] spawnpoints = GameObject.FindGameObjectsWithTag("SpawnPoint");
 Debug.Log("Spawns: " + spawnpoints.Length);

 Transform spawnPoint = spawnpoints[Random.Range(0, spawnpoints.Length)].transform;

 yield return new WaitForSeconds(respawnTime);
 myTransform.position = new Vector3(spawnPoint.position.x, 1, spawnPoint.position.z);
 gameObject.renderer.enabled = true;
 turret.renderer.enabled = true;
 myState = State.playing;
 myHealth = 100;

}

public void DecreaseHealth(int value) { //decrease it by the amount of damage the projectile does if (myState == State.dead || myState == State.invincible) return; if (Network.isClient) return; Debug.Log(Network.isServer ? "we are a server" : "we are a client"); myHealth -= value;

 if (myHealth <= 0)
 {
     Debug.Log(userName + " is dead");
     //Instantiate(ExplosionPrefab, myTransform.position, Quaternion.identity);
     networkView.RPC("TurnOffThisRenderer", RPCMode.AllBuffered, null);
     networkView.RPC("KillThisPlayer", RPCMode.All,null);
 }
 else
     Debug.Log(userName + " has " + myHealth + " health left.");