Marantz CD-50 and CD-60, TDA1541, CDM4/19

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
I've gotten all the parts for the TPR.
If the heatsinks are too small(bigger then the other ones previously shown though) could I just use 2 per LM317T? Back to back so to speak.
TPR_parts_1.jpg


Either I use this transformer, or I "steal" supply DC from some where on the main PCB. Don't know which option is the better one.
TPR_trafo_1.jpg


Also recieved 4pcs of Rubycon ZLH 471uF/16V. What's my best approach? Putting them parallel to the elcos after the regs or replacing elcos after regs completely with these?
Rubycon_ZLH_470_16_1.jpg
 
Does the dog do the vacuuming too ?
Like....bits of wire and solder blobs on the floor ?
Send him here when he's finished:D

Could be a mess on the floor when I'm done for the day, but no HE doesn't vacuum, in fact he doesn't like the vacuum :D

He's a great watchdog though, imported, from protection/work breeding. A big one for a Dobermann too 76cm floor to back and nearly 50kg.

A shame we can't compete with him in events like protection etc due to him being cropped and docked(spelling?) which isn't allowed in Sweden. It was done by the breeder who lives in a country where it's legal.

My fiancé is the one who most of the time fixes the mess I make when DIY:ing :eek:
 
Last edited:
Lmao!!!! Too much wine Andrew???

Mayday, nice work. Now all you need to do is get it small enough to use I side the player. Have you tested with a higher voltage transformer and varying load to make sure it's actually regulating?

On the subject of smaller boards, you can use verodes to design the layout it's pretty good :)
 
Lmao!!!! Too much wine Andrew???

Mayday, nice work. Now all you need to do is get it small enough to use I side the player. Have you tested with a higher voltage transformer and varying load to make sure it's actually regulating?

On the subject of smaller boards, you can use verodes to design the layout it's pretty good :)

Thanks!
It's feed w about 12,5Vdc (9Vac, diodebridge) in the picture and giving exactly 4,95Vdc.
That should mean it's regulating, right? Will test it with a 100R 3W resistor load I've got just for this.
I was actually thinking I'd just trim about 10mm of one side of the board and use it as it is.

What's verodes?
 
Last edited:
How much current will that draw?

What value cap are you now using after the diodes in the player? That will give you an idea of what you should be using on this psu!

About 50mA(if you are talking about the dummy load), I've already gotten the 3W resistor. If I want to test with full load, I got the advice to use a 27R resistor.

The standard caps are still there, except for the 22000uF TSU.
The other three I'll parallell with 1000uF low esr each.

I've got a few 2200uF good quality caps, could use one or two of those on the rectifier board.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.