Sanyo RP5310 Portable Radio Not Working

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12voltvids

Күн бұрын

This week its all the easy fixes

Пікірлер: 29

@chetpomeroy1399 2 күн бұрын

That little radio is but one reason why the Japanese were eating everybody else's lunch back then. In the 1970's, the quality of their electronics and automobiles were unparalleled.

@12voltvids 2 күн бұрын

The Japanese were dumping cheap cars and cheap electronics on the market below cost to intentionally harm local manufacturing. We might have kicked their ass in ww2, but they kicked our ass in the global electronics and auto manufacturing. When an American transistor radio was 49.95 and a Japanese was 19.95 which one would you buy all other things being equal? A teacher i had at school had been an English teacher in Japan in the 70s couldn't believe how much electronics cost (and everything else for that matter) compared to here. Why, because they were dumping products. The Canadian government put embargoes on happiness companies in the 80s to try to save the Canadian companies like electrohome alive but it didn't work. Now China is doing the same to Japan.

@chetpomeroy1399 2 күн бұрын

@@12voltvids Think what we might about Japan, but they were a valuable, indispensable ally during the Cold War against Red China, North Korea and the Soviet Union, and they *still* are an ally of the Western powers against Red China *today.* During the early postwar years, their electronics and automobile production lines were able to operate at a profit on *razor-thin margins,* and they made quality, reliable and fuel-efficient automobiles during the oil crises of the 1970's, supplanting domestic manufacturers' dominance (at that time, the Big Four mostly built land yacht gas hogs). They built "better mouse traps," and people bought *millions and millions* of them. All that being said, it appears that Japan is now getting a dose of its own medicine from mainland China.

@sideburn 4 күн бұрын

I have a tough one right now. It’s a Sinclair MTV1. I removed the corroded NICd batteries and cleaned up the boards and broken traces and got it working perfectly so I put it all back together and now it’s randomly just completely dropping the single to white snow and white noise and then when ever it feels like it the picture comes back. I have run out of ideas how to go about solving this one. I’m about 99% sure it’s not a bad connection though.

@michaelturner4457 4 күн бұрын

I doubt that Dave has seen a Sinclair MTV1 Microvision pocket TV from 1977 in Canada. I've got a MTV1B at home, which is the simplified later version of the Microvision. Think fault could be in the RF or IF sections. Is it VHF, or UHF, or both that cuts out? Maybe an intermittent component, if you've checked all the connections. Could be a fault in one of the VHF and UHF tuner modules, caused by battery corrosion. Be aware that the MTV1 has two custom ICs by TI in the RF/IF sections, that are completely unobtanium. And if one of those has failed....good luck! A service manual and schematics for the MTV1 are available online.

@sideburn 4 күн бұрын

@@michaelturner4457 I will tryUHF. I have two MTV1’s and the one that’s mostly working luckily didn’t have too much corrosion. All traces were good and only the batteries themselves were corroded. I am away of the proprietary IC’s. The other one had bad varicap diodes inthe tuner circuit (the one with the smaller can over the top of it. Pretty sure this is the VHF tuning circuit) and I tried replacing them with BB910 Varactor Diodes. Do you know of these would be equivalent replacements? The originals only have colored stripes on the back so I could not tell what values they were. So the first one I can use as a parts donor. Maybe try swapping the if modules? I wish I could find some consistency on the failure but so far it’s seeming to be completely random.

@chrisa2735-h3z 4 күн бұрын

That sounds like an intermittent solder connection or intermittent part to me, I wish you the best of luck on your project!!😊

@sideburn 4 күн бұрын

@@chrisa2735-h3z I’ve pretty much ruled out a bad connection through “Percussive maintenance”. Tapping, shacking, banging on it makes no difference at all in its behavior. It can be completely stationary or shaking it and tapping the tuner or hitting it agains a table and there’s no change it’s either a perfect picture or completely dead signal as if my rf modulator were turned off and then It will suddenly come back by itself so it’s looking more more like a faulty component to me.

@chrisa2735-h3z 4 күн бұрын

@@sideburn ohh ok! I hope you find the faulty component easily!

@markmarkofkane8167 4 күн бұрын

I was going to guess, but I see that I'm wrong.

@papakape7404 3 күн бұрын

Just asking for a honest opinion, seems your picquic doesn't get rust. Mine was already, came from Canada a gift from my brother. 🙁

@12voltvids 3 күн бұрын

Could be a humidity issue. No rust yet and I have had it for many years but I get grease and oil on things just because I deal with that on service. A trick though is to spray tools when new with wd40 and then wipe off. It will leave a slight oil film which will keep oxygen away. Or wipe them with a rag that has a little Vaseline on it.

@papakape7404 2 күн бұрын

@@12voltvids Thanks, I'll do that. Hope it's not too late. 🙂

@chad_griffiths 4 күн бұрын

I still have cans of Rubachem board cleaner and freeze spray.

@mrpedrodrodriguezsr7628 4 күн бұрын

Can you believe that I had the exact same radio with 2 differences, it was AC/DC and carried the SONY brand! COULD Sony ever had OEM contracts with Sanyo Electronics? It was a VERY good sounding radio and especially sensitive and selective .

@12voltvids 4 күн бұрын

Then it wasn't the exact same radio. It was a Sony.

@UHF43 3 күн бұрын

I don't know about this era, but they certainly did later on. I still have somewhere a Sony catalogue for 1992 and they had a couple Sanyo's and a Grundig in their VCR lineup. The fun fact is that you could buy a Sony branded VCR made by Grundig in Germany using a Panasonic G-deck mechanism.

@12voltvids 3 күн бұрын

@@UHF43i find that hard to believe considering that Sony invented the vcr and built all their own machines right up to the early 2000s when everyone was turning to Samsung and Funai.

@UHF43 3 күн бұрын

@@12voltvids Maybe in North America, but here in Europe Sony sold rebadged Sanyo, Hitachi and Grundig. KZbin user @vvm2004 has 3 videos showing the Sony SLV-270, SLV-275 and their internals and you can spot they are Grundig because they have the Stop and Stand-by functions combined in the same button and, yes, they use the Panasonic G-deck.

@mrpedrodrodriguezsr7628 2 күн бұрын

@@12voltvids When I said exact, I mean in all aspects except Power and branding. I know Sanyo built for others when for some reasons the designer company didn't have a line to manufacture a product, because it was occupied building something else at the moment. Matsushita even turned to then to manufacture certain products and components.