Voltage seems right, but no display

Started by FamiJimbo, September 29, 2017, 11:29:20 am

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FamiJimbo

Hi everyone,

I've had a Famicom since about two weeks now and have been trying to get it to work, but it just doesn't work. Wherever I measured it says the Voltage was 5V so it seems okay. When I plug it into the TV though it doesn't do anything when turning it on. If I flip the switch from Game to TV it does show the slightest bit of Television signal through the white noise, but when flipped back to Game there is only white noise.

Does anyone know what's wrong and how I can fix this??

Thank you!!

P

Where are you located? Your TV might not support Japanese NTSC.

FamiJimbo

I'm located in Europe, Netherlands to be specific, is there any way to check without importing a Japanese or American TV?

P

I don't know any way to check. But I strongly think NTSC via RF is the problem. Your options are to either use an NTSC device like a video player or similar that has both RF input and composite (RCA or SCART contact) output and use it as an RF->composite converter, or the other option is to get the Famicom AV-modded. Either way your TV needs to support NTSC via AV.

FAMICOM_87

check your's TV specifications to see if it supports NTSC , You can mod the fami for AV ,but your TV must support NTSC as well , Just try it on a more modern CRT from late 90's early 2000 they are multireione :)
I have one little Philips which supports PAL and NTSC an it is from middle 90's no problem with my PAL NES and Famicom on it  :D

try channel select switch on the beck on your fami in both positions.

Great Hierophant

When trying to hook up a Famicom with its RF output outside of Japan, you must be able to answer the question "Can my device (TV, VCR) tune to the Famicom's RF frequencies?"  I can answer that question with a Yes because I live in North America and have TVs and a VCR that can tune to the Famicom's frequencies.  You must be able to receive at 90-96MHz (Japan Channel 1) or 92-102MHz (Japan Channel 2) to view the Famicom's signal.  Look at your broadcast and cable channel assignments to see if you have a channel that corresponds to those bands.  If not, it's time to mod.
Check out my retro gaming and computing blog : http://nerdlypleasures.blogspot.com/

P

And before modding you must answer yes to the question "Do my TV support NTSC at all?", if not get a TV that do.

TV manuals seldom tells you if your TV has NTSC-support, but if you google your TV's model number you may find a technical service manual for it that do.

FamiJimbo

Hello Everybody!

So before checking all of those things you've told me about(Thank you!).
My TV is a Salora 24LED3315TDW and I can't really find anything about it's NTSC support or anything.

Does anyone else have this TV or a TV of this brand? If so could he/she tell me more about if it supports NTSC?

I'll check the other TV's in the house if they do and I'll keep you updated!

P

So it's a modern LED TV. I think modern TVs in Europe generally do support NTSC but I remember a case with someone in Great Britain having an LCD TV that didn't. Modern TVs are no good with RF though and often can't be tuned manually with any good precision. They are also more picky about picture quality and gives up if it's too poor ending up displaying nothing.

I found the manual here: http://zoom.manuals365.com/swf/salora/salora-24led3305td-nl-fr-en.html?page=174
It seems it indeed supports NTSC, so AV-modding shouldn't be a problem from what I can tell.

FamiJimbo

I've ordered a new RF cable and when I'm home I will try it out and update you on the result!

thanks for the help so far :)

P

I don't think a new cable would help if your TV can't tune in to 90-102 MHz.

You need to AV-mod a Famicom, in other words build an amplifier for the composite video signal and connect the amplified composite video and mono audio to your TV's AV ports.

Alternatively use a Twin Famicom or a HVC-101.

FamiJimbo

October 04, 2017, 10:47:41 am #11 Last Edit: October 05, 2017, 01:29:09 pm by FamiJimbo
Thank you for all the tips and help!

I'd rather not AV-Mod it to keep it original, this will be a last resort.

In another Topic I've read about sanding the RF port, I wanna see if that helps. If anyone else has tips that I could do before aiming towards the AV-Mod than please tell me.

(Does anyone know how to take off the top plate of the RF port?

Post Merge: October 04, 2017, 03:01:26 pm

Okay, I've tried Sanding the RF output and it looks a lot cleaner now, I also sprayed some WD40 in the port to see if that might give me some signal(which it didn't).

Also I have no clue how to set it to NTSC, when I go to the DVD Function it does display NTSC. At the TV function it only displays PAL, but in setting the Colormode is PAL and I can't choose anywhere between NTSC and PAL. I have no clue how it works hehe I'm a dumbass..

Saturday I'll be able to get my hands on a solder unit and will try to reflow solder points or add solder to dry solder points.

I hope this will fix it and as always I will keep you up to date!

(Any tips/tricks and hints are accepted with open arms. Please if you know anything don't be afraid to post)

Thank you!!

Post Merge: October 05, 2017, 12:31:26 pm

Hello people, I tried something again and now I have some pictures to show you what I see now on my TV.

In the Attachments I've added the pictures to show the difference when the Famicom is turned on and when it's turned off, maybe this'll help people figure out what it could be?

Post Merge: October 05, 2017, 01:19:51 pm

OKAY OKAY! Sorry for the spam! it works! I have signal during the manual search!!
I have no clue what I did, but it works. I don't have sound though, the sound is connected to a Radio station or something.

I hope I can find a way to fix this!!

I'm so happy!

P

Oh great! If you get a clean enough picture in colour but incorrect sound, there is a solution using an FM radio. :D

FamiJimbo

Quote from: P on October 06, 2017, 12:27:01 am
Oh great! If you get a clean enough picture in colour but incorrect sound, there is a solution using an FM radio. :D

Thanks for the reply!

I've tried it, but it doesn't do anything. I'm not able to hear the soundtrack or any sounds coming from the famicom. :(

Do you know anything else that might work?


Sent from my iPhone using Tapatalk

P

Hmm you can tune in to 95 MHz on the FM Radio but still get no sound? That's strange, maybe there's a problem with the CPU or something. Does the CPU get hot to touch when power is on?