Het blijft geweldig om de oude originele ZX Spectrum moederborden te redden. Moet ooit een REPAIR AND REFURBISHMENT SERVICE voor de ZX SPECTRUM 128K TOASTRACK moederbord bij je laten doen. Heb nu al meerdere moederborden ervoor bewaard. Ben nu veel meer bezig met de HARLEQUIN 128K REV 2D, dan met de Commodore 64 of de AMIGA 500/1200. Zal leuk zijn om weer na 37 jaar de oude ZX Spectrum 128K TOASTRACK te gebruiken.
Ben, you mentioned that you modified a composite to HDMI adapter for the ZX Spectrum, can you share that mod with us? I have a ZX-HD from you and have another on order along with 2 AX 128 stereo mod kits, I also got a Harlequin 128 kit and diag cart kit, your kits are the best!
My experience is that almost all ZX Spectrum 16/48K boards with original capacitors, have issues caused by the capacitors. If you find a board with original caps that still works ok, you know in a couple of years the capacitors will develop problems. Hence they are replaced.
Only caps I look at are those in the PSU unit because I treat them as being in a high strain environment. I have four rubber key specs in use here, none have had the caps changed out, and all work perfectly OK with the original parts left alone. As I said, 90s+ caps yes I'd look at with suspicion but the caps from the 80s or earlier are generally reliable now and in the future.
I always find that hard to tell, since for example this Weller WE1010 (do not buy, it's a piece of crap) station has an offset in the settings, so you cannot actually say what temperature it is other than measuring it with another tool. That said, I use leaded and lead-free wire. With lead-free I up the temperature by about 30 degrees, for easy flowing. At this moment on this soldering station that means about 360 for leaded, and 390 for lead-free solder wire.
The Spectrum itself does not need M1, only some expansions, so the "broken" CPU can still be used. Didn't Sinclair use CPUs without M1 intentionally for some time? You have high refurbishment standards, but Z80 with broken M1 could be interesting for those attempting a cheap repair.
I think a lot, maybe almost all, current users of the ZX Spectrum, will use them with one or the other storage interface. All of those require a Z80 CPU with working M1 line, so I do replace them. Fortunately I can still obtain lots of these Z80 CPUs from China, which are remarked, but I test all of them thoroughly (3 pass testing), so it's not really a big deal.
I enjoyed that. Thanks for showing.
Brilliant video. 😁
Het blijft geweldig om de oude originele ZX Spectrum moederborden te redden. Moet ooit een REPAIR AND REFURBISHMENT SERVICE voor de ZX SPECTRUM 128K TOASTRACK moederbord bij je laten doen. Heb nu al meerdere moederborden ervoor bewaard. Ben nu veel meer bezig met de HARLEQUIN 128K REV 2D, dan met de Commodore 64 of de AMIGA 500/1200. Zal leuk zijn om weer na 37 jaar de oude ZX Spectrum 128K TOASTRACK te gebruiken.
Ben, you mentioned that you modified a composite to HDMI adapter for the ZX Spectrum, can you share that mod with us? I have a ZX-HD from you and have another on order along with 2 AX 128 stereo mod kits, I also got a Harlequin 128 kit and diag cart kit, your kits are the best!
I've had success with repairing zx spectrums. The issue 2 board I find the hardest lol 😆
Recapping for recappings sake. I can understand caps from 1990 onward being changed out but before then the caps were usually ok.
My experience is that almost all ZX Spectrum 16/48K boards with original capacitors, have issues caused by the capacitors.
If you find a board with original caps that still works ok, you know in a couple of years the capacitors will develop problems.
Hence they are replaced.
Only caps I look at are those in the PSU unit because I treat them as being in a high strain environment. I have four rubber key specs in use here, none have had the caps changed out, and all work perfectly OK with the original parts left alone. As I said, 90s+ caps yes I'd look at with suspicion but the caps from the 80s or earlier are generally reliable now and in the future.
Great video! What is the temperature you use on your solder? Also did you perform any diagnose before changing the capacitors?
I always find that hard to tell, since for example this Weller WE1010 (do not buy, it's a piece of crap) station has an offset in the settings, so you cannot actually say what temperature it is other than measuring it with another tool.
That said, I use leaded and lead-free wire. With lead-free I up the temperature by about 30 degrees, for easy flowing.
At this moment on this soldering station that means about 360 for leaded, and 390 for lead-free solder wire.
Thanks for the info! Regarding the capacitors the exchanged Inês, are the same you sell , correct? Tks!
@@ambkinetic Yes, all top-grade (and nicely looking!) Vishay capacitors.
@@ByteDelight Did you perform any diagnose (ZX Diag Cart ? ) to the Speccy before changing the capacitors? Tks!
The Spectrum itself does not need M1, only some expansions, so the "broken" CPU can still be used. Didn't Sinclair use CPUs without M1 intentionally for some time? You have high refurbishment standards, but Z80 with broken M1 could be interesting for those attempting a cheap repair.
I think a lot, maybe almost all, current users of the ZX Spectrum, will use them with one or the other storage interface.
All of those require a Z80 CPU with working M1 line, so I do replace them.
Fortunately I can still obtain lots of these Z80 CPUs from China, which are remarked, but I test all of them thoroughly (3 pass testing), so it's not really a big deal.