Famicom video issue

[Bidziilla]

Hello!
Please forgive me if this section isn't the right place for this kind of thread.

I have a Famicom that I bought in May 2019, and it's worked fine since then. At the time I used a Tomee brand multi AC adapter (the kind that supports NES, SNES and Genesis). No issues with it. That power supply eventually stopped working for all my consoles I tried it on, so I went to a local retro game shop to pickup another similar style adapter. It's noticably much lighter in weight, and feels very cheap. However for a while it got the job done. The brand of the new one is Old Skool, might I add. I got this power supply about a year ago.

Recently however, when using it on my Famicom- the screen comes on and the game will play for a few minutes. Then, the screen will start to get really fuzzy, the colors will get all out of whack and then it loses signal all-together. It looks as if it may be a power issue, however I am not entirely sure. It doesn't matter what TV I use, still same issue. The supply appears to work fine in a standard NES through AV.
I have a Disk System as well, and I wanted to make sure that the system is still powering on and working fine. I hooked everything up, inserted a disk and the drive started to read it. It's one of those disks that initially loads into the game, and then loads some more before the title screen. It seems to do the full sequence as normal, I'm just unable to see the picture.

Does this sound like it's a power supply fault? Can I use the disk system power supply for the Famicom instead? I would get another Tomee supply, as that's never had such an issue but the shops in my area no longer sell them, so I must go online to get it if needed. I should also probably add that for an RF cable, I use a generic male-to-male rca cable with a converter to coax on one end.

If it is the console, what are my options? Would an AV mod bypass all of this, or should I just buy a new Famicom? My console is a bit older, being a 1984 motherboard, so I wouldn't be surprised if it's just on it's way out.

[Bidziilla]

Update: I decided to open it and check it. Several capacitors have leaked out. Looks like I'm buying a new Famicom.

[Pikkon]

I would still upgrade your psu for a better one,something like this.
https://castlemaniagames.com/products/triad-power-supply-ac-dc-9v-1-3a


As for your famicom,do you know how to replace caps,it's really that hard.

[Bidziilla]

I would still upgrade your psu for a better one,something like this.
https://castlemaniagames.com/products/triad-power-supply-ac-dc-9v-1-3a


As for your famicom,do you know how to replace caps,it's really that hard.

I can replace them just fine, I just don't feel like doing that sorta stuff. I find it easier to just buy a new console at this point because if some components are failing, others are likely soon to follow.

[Skawo]

Aw. Please don't just trash the old one, though.

[P]

Other than the electrolytic capacitors I don't think there are that many parts that will fail anytime soon.
Buying a new console on the other hand may soon just have the same problem again unless you buy a recapped one.

[Bidziilla]

Aw. Please don't just trash the old one, though.

I'd never trash a Famicom!

Other than the electrolytic capacitors I don't think there are that many parts that will fail anytime soon.
Buying a new console on the other hand may soon just have the same problem again unless you buy a recapped one.

Fair point. I'll still buy another one, but may repair my old one at some point in the future. I noticed a bit of rust around the consoles ceramic capacitors on the main board, but those have to of been there for years. Is there a cap that normally goes bad? I noticed the system usually had fuzzy video anyhow, so if that's a common issue it would be nice to know I can easily fix it. (or I could just do a AV mod, which in theory should bypass all the RF stuff completely).

Actually, now that I think about it.. under the shield on the RF board, one of the caps looks slightly bloated at the top. lol

[P]

Ceramic caps are used for other things than the RF as well so an AV-mod might not solve that problem.

Another possible problem is corroded contacts, but that happens mostly with connectors like the cartridge slot. Eventually traces and other metal parts may corrode and stop being conductive though.