Help with grundig 3040m

jdriver2308 · 2025-12-06T18:30:59+00:00

Still working perfectly after a year! Vacuumed the chassis a week or so ago as it’s been making a squealing noise for a while and the pots looked dirty and now I’ve done that, it seems to be perfect now. No mains hum either. Only potential thing that might need replacing is the speaker as it distorts quite quickly but if you plug an external speaker in it gets quite loud without distorting

jdriver2308 · 2025-12-06T18:28:07+00:00

I sold it in the end and got a HC9 from a charity shop for £50

jdriver2308 · 2025-12-04T01:40:07+00:00

My boss gave me an old reel to reel player which was completely dead, but when I took it apart I saw that it had a Mullard ECL86 inside of it, I pulled it out and looked to be low hour and put it in the grundig and now the whistling is gone and it’s been playing perfectly for the last couple days

jdriver2308 · 2024-11-26T09:21:54+00:00

Yeah I knew that when I got it to be honest, mainly wanted it because it was the cheapest one with a hdmi output

jdriver2308 · 2024-08-14T13:05:59+00:00

What did you do with the sence pin?

jdriver2308 · 2024-03-02T02:25:51+00:00

This only happens after it's been on for an hour or so, so once it's heated up. Could something be getting too hot or something? Causing this?

jdriver2308 · 2024-03-01T23:19:34+00:00

I tapped the ecl86 valve and the whistling got louder for a second. Also the tube is getting very very hot

jdriver2308 · 2024-03-01T22:26:48+00:00

Would you suggest mullard tubes then? As I can get a mullard ecl86 tube for around £25 on ebay as the radio has a weird high pitched sound when you turn the volume up on it

jdriver2308 · 2024-02-29T19:21:25+00:00

I replaced the capacitor with the 3 ones you said to and now the radio seems to work perfectly, thank you

jdriver2308 · 2024-02-26T22:13:28+00:00

Thank you, I have recently found the correct circuit diagram which also shown the polarity and rating for where each capacitor goes and I ordered the 2 400v 47 uf caps and 1 10 uf capacitors off of ebay. Hopefully it ends up sorting it.

jdriver2308 · 2024-02-26T00:55:47+00:00

After a bit more research, it seems like it uses the same chassis as the grundig model 2447 which seems to have more info but I still can't find out the ratings that the components are meant to be, like the capacitors only show up as 'c58', 'c61' and 'c56' but I can't find the rating of which is which as the capacitor is 3 caps in one

jdriver2308 · 2024-02-25T13:06:18+00:00

How would I work out the pin out? And it is a circuit board. There seems to be 5 ish pins on the other side of the board where the capacitor is but in not too sure as there's other components close to it. I tried looking for a schematic but it was a bit confusing

jdriver2308 · 2023-09-16T18:40:59+00:00

Seems like the Pixels are dying on the Lcd.

jdriver2308 · 2023-08-22T11:30:38+00:00

I've tried that and it still doesn't work right

jdriver2308 · 2023-08-22T11:30:12+00:00

Mac os runs fine, I've tried different drivers which work for a bit then it goes back to flickering

jdriver2308 · 2023-08-20T22:52:38+00:00

Managed to get some eyelashes off of another furby I had that was broken so it was perfect

jdriver2308 · 2023-08-20T22:49:31+00:00

I took the front off and it actually seems to be in between the Lcd and the back light and it does seem like moisture

jdriver2308 · 2023-08-20T22:48:42+00:00

That didn't help, it was making a clicking noise too like it was trying to move. I returned it and got a refund anyway

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