diff --git a/MiSTer.ini b/MiSTer.ini
index d67ddaf..ff4c453 100644
--- a/MiSTer.ini
+++ b/MiSTer.ini
@@ -33,6 +33,7 @@ fb_terminal=1          ; 1 - enabled (default), 0 - disabled
 osd_timeout=30         ; 5-3600 timeout (in seconds) for OSD to disappear in Menu core. 0 - never timeout.
                        ; Background picture will get darker after double timeout
 video_off=0            ; output black frame in Menu core after timeout (is seconds). Valid only if osd_timout is non zero.
+video_off_hdmi=0       ; 1 - power down HDMI on video_off timeout (TV can sleep), 0 - keep HDMI active
 osd_rotate=0           ; Display OSD menu rotated,  0 - no rotation, 1 - rotate right (+90°), 2 - rotate left (-90°)                  
 vga_sog=0              ; 1 - enable sync on green (needs analog I/O board v6.0 or newer).
 lookahead=2            ; 0 - off, 1–3 - scroll list up to 3 items ahead of cursor near top/bottom
diff --git a/cfg.cpp b/cfg.cpp
index 9d83f0d..f5ff477 100644
--- a/cfg.cpp
+++ b/cfg.cpp
@@ -109,6 +109,7 @@ static const ini_var_t ini_vars[] =
 	{ "VRR_MAX_FRAMERATE", (void *)(&(cfg.vrr_max_framerate)), UINT8, 0, 255 },
 	{ "VRR_VESA_FRAMERATE", (void *)(&(cfg.vrr_vesa_framerate)), UINT8, 0, 255 },
 	{ "VIDEO_OFF", (void*)(&(cfg.video_off)), INT16, 0, 3600 },
+	{ "VIDEO_OFF_HDMI", (void*)(&(cfg.video_off_hdmi)), UINT8, 0, 1 },
 	{ "PLAYER_1_CONTROLLER", (void*)(&(cfg.player_controller[0])), STRINGARR, sizeof(cfg.player_controller[0]) / sizeof(cfg.player_controller[0][0]), sizeof(cfg.player_controller[0][0]) },
 	{ "PLAYER_2_CONTROLLER", (void*)(&(cfg.player_controller[1])), STRINGARR, sizeof(cfg.player_controller[0]) / sizeof(cfg.player_controller[0][0]), sizeof(cfg.player_controller[0][0]) },
 	{ "PLAYER_3_CONTROLLER", (void*)(&(cfg.player_controller[2])), STRINGARR, sizeof(cfg.player_controller[0]) / sizeof(cfg.player_controller[0][0]), sizeof(cfg.player_controller[0][0]) },
diff --git a/cfg.h b/cfg.h
index aa824e0..762ae2d 100644
--- a/cfg.h
+++ b/cfg.h
@@ -82,6 +82,7 @@ typedef struct {
 	uint8_t vrr_max_framerate;
 	uint8_t vrr_vesa_framerate;
 	uint16_t video_off;
+	uint8_t video_off_hdmi;
 	uint8_t disable_autofire;
 	uint8_t video_brightness;
 	uint8_t video_contrast;
diff --git a/menu.cpp b/menu.cpp
index 257b9af..a8d8bd8 100644
--- a/menu.cpp
+++ b/menu.cpp
@@ -1239,6 +1239,7 @@ void HandleUI(void)
 			{
 				off_timeout = 0;
 				video_menu_bg(user_io_status_get("[3:1]"), 3);
+				if (cfg.video_off_hdmi) video_hdmi_power(0);
 			}
 
 			if (c || menustate != MENU_FILE_SELECT2)
@@ -1248,6 +1249,7 @@ void HandleUI(void)
 				{
 					c = 0;
 					menu_visible = 1;
+					if (cfg.video_off_hdmi) video_hdmi_power(1);
 					video_menu_bg(user_io_status_get("[3:1]"));
 					OsdMenuCtl(1);
 				}
diff --git a/video.cpp b/video.cpp
index 3e43d05..46aa2d3 100644
--- a/video.cpp
+++ b/video.cpp
@@ -1562,6 +1562,23 @@ static void hdmi_config_init()
 	hdmi_config_set_csc();
 }
 
+void video_hdmi_power(int on)
+{
+	// ADV7513 power-down control. 0 = power on, 1 = power down.
+	int fd = i2c_open(0x39, 0);
+	if (fd >= 0)
+	{
+		uint8_t val = on ? 0x00 : 0x40;
+		int res = i2c_smbus_write_byte_data(fd, 0x41, val);
+		if (res < 0) printf("i2c: write error (41 %02X): %d\n", val, res);
+		i2c_close(fd);
+	}
+	else
+	{
+		printf("*** ADV7513 not found on i2c bus! HDMI won't be available!\n");
+	}
+}
+
 static void hdmi_config_set_hdr()
 {
 	// Grab desired nits values
diff --git a/video.h b/video.h
index 8cd39bc..5822b25 100644
--- a/video.h
+++ b/video.h
@@ -68,6 +68,7 @@ int video_bg_has_picture();
 int video_chvt(int num);
 void video_cmd(char *cmd);
 void video_mode_cmd(char *cmd);
+void video_hdmi_power(int on);
 
 void video_core_description(char *str, size_t len);
 void video_scaler_description(char *str, size_t len);