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Sears SR3000 RGB Monitor (Circa 1986)

Hi,

I just recovered the old monitor that I used to use for my C64 and
later for my game systems. After recovering it, I tried to use it with
my vintage NES. When I turned it on, I had major trouble adjusting the
color, but everything else more or less worked. I opened the case to
try to clear any gunk that had accumulated near the front, but after
reassembling it , I get nothing on the screen. Just black. (Audio works
better than before though ;) )

Is there something obvious that might have happened? Is it dead? Is
there a way that I can verify it's dead?

ps. I'm an electronics n00b.
 
R

Rick

Jan 1, 1970
0
Throw it in the back of your Model-A and take it to a dump.

Or monitor recycling center.
 
R

Rick

Jan 1, 1970
0
<sarcasm>Thanks for the helpful advice!</sarcasm>

Sorry, just kidding. Actually I have very fond memories of
my =C64.. I learned 65xx assembly language on it (anyone
remember HESMON?)

Anyway, if you've never tried one of the Commodore
emulators (e.g. MAME32) they are a kick and a half.
 
np ;)

I'm just trying to squeeze a little more life out of this monitor. It
always had a MUCH better picture for video game systems than any TV I'd
seen.
 
D

Dave

Jan 1, 1970
0
Sorry, just kidding. Actually I have very fond memories of
my =C64.. I learned 65xx assembly language on it (anyone
remember HESMON?)

Anyway, if you've never tried one of the Commodore
emulators (e.g. MAME32) they are a kick and a half.

Does Mame emulate a C64?
 
D

Dave

Jan 1, 1970
0
[email protected] wrote in @f14g2000cwb.googlegroups.com:
Hi,

I just recovered the old monitor that I used to use for my C64 and
later for my game systems. After recovering it, I tried to use it with
my vintage NES. When I turned it on, I had major trouble adjusting the
color, but everything else more or less worked. I opened the case to
try to clear any gunk that had accumulated near the front, but after
reassembling it , I get nothing on the screen. Just black. (Audio works
better than before though ;) )

Is there something obvious that might have happened? Is it dead? Is
there a way that I can verify it's dead?

ps. I'm an electronics n00b.


How many things did you unplug while in there? Just remove the cover again
and re-check all the connections that may have become unconnected. That's
about it. I doubt you killed it.

p.s. You have some voltage (you are getting sound) but no high voltage at
the tube. Check the connector at the back of the tube, and any wires going
from the tube to the circuit board.

Obligitory:
Don't shock yourself, you can die trying to fix a $1 monior :)

Dave
 
I

Inty

Jan 1, 1970
0
np ;)

I'm just trying to squeeze a little more life out of this monitor. It
always had a MUCH better picture for video game systems than any TV I'd
seen.

It's an RGB Monitor. Reopen it, deconnect everything, make sure that you
haven't damaged the board (carefully inspect it) nor any component(S) on it.
Reconnect all the connectors in the right place, ON !

I.
 
B

b

Jan 1, 1970
0
[email protected] ha escrito:
Hi,

I just recovered the old monitor that I used to use for my C64 and
later for my game systems. After recovering it, I tried to use it with
my vintage NES. When I turned it on, I had major trouble adjusting the
color, but everything else more or less worked. I opened the case to
try to clear any gunk that had accumulated near the front, but after
reassembling it , I get nothing on the screen. Just black. (Audio works
better than before though ;) )

you'll have to give us more than that.
check:
filaments lit?
HV present?
raster? (turn up G2)
checked for cracked soldering on mainboard, esp. near input sockets and
filament connector?

see www.repairfaq.org, carry out the above and then repost with your
results
regards, Ben
 
Ben,

There is a faint glow (orange-yellow) in the tube on the back of the
display when powered on.

The video-in jack(?) is a little loose, but so is the audio jack and it
works fine. I don't see any connectors that are loose.

I'll read the FAQ and go from there. Thanks.
 
A

Andy Cuffe

Jan 1, 1970
0
Hi,

I just recovered the old monitor that I used to use for my C64 and
later for my game systems. After recovering it, I tried to use it with
my vintage NES. When I turned it on, I had major trouble adjusting the
color, but everything else more or less worked. I opened the case to
try to clear any gunk that had accumulated near the front, but after
reassembling it , I get nothing on the screen. Just black. (Audio works
better than before though ;) )

Is there something obvious that might have happened? Is it dead? Is
there a way that I can verify it's dead?

ps. I'm an electronics n00b.


Try adjusting the control on the flyback transformer marked "screen"
or "G2". When you turn this clockwise, you should see something on
the screen. If you only see a think horizontal line, look for a
switch on the CRT board, or main board that's labeled "service" and
try switching it. If you then get a picture change it back to the
service mode and adjust the screen control until you get a very dim
white line.
Andy Cuffe

[email protected] <-- Use this address until 12/31/2005

[email protected] <-- Use this address after 12/31/2005
 
D

Dave

Jan 1, 1970
0
[]
Does Mame emulate a C64?

No, but MESS does.

http://www.mess.org/

I almost thought that Mame could, except maybe for the SID. I think some
(many?) arcade games used the 65xx processor. I've used CCS64 as a 64
emulator.

I haven't looked at MESS for quite a long time. I can't believe how many
systems it emulates, or that are in progress! I'll have to check it out.

Dave
 
Try adjusting the control on the flyback transformer marked "screen"
or "G2". When you turn this clockwise, you should see something on
the screen. If you only see a think horizontal line, look for a
switch on the CRT board, or main board that's labeled "service" and
try switching it. If you then get a picture change it back to the
service mode and adjust the screen control until you get a very dim
white line.


When looking for the flyback transformer (didn't know what it was) I
noticed a connector that was loose. Now I get a lit screen
(bluish-white), with white lines. (!)

The service switch you mentioned before (labeled SER <> NOR) is on
"normal". When I switch it to "SER" the aforementioned white line can
be seen.

I've turned both knobs on the side of the flyback transformer labeled
"screen" and "focus" with neither changing the picture.

At least I know the screen is getting power and isn't dead. Any ideas?
 
J

James Sweet

Jan 1, 1970
0
When looking for the flyback transformer (didn't know what it was) I
noticed a connector that was loose. Now I get a lit screen
(bluish-white), with white lines. (!)

The service switch you mentioned before (labeled SER <> NOR) is on
"normal". When I switch it to "SER" the aforementioned white line can
be seen.

I've turned both knobs on the side of the flyback transformer labeled
"screen" and "focus" with neither changing the picture.

At least I know the screen is getting power and isn't dead. Any ideas?

Sounds like the focus and screen wires from the flyback aren't connected for
some reason, look for more connectors that may have come loose.
 
Screen and focus will change the output, I mispoke.

What I meant to say was that nothing that I can change (knobs,
switches, etc) can bring my video input to the screen.

Sorry.
 
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