Search found 53 matches

by Morpheus
Tue Oct 09, 2018 10:32 am
Forum: Hardware
Topic: Issue with ZX Spectrum +2 keyboard
Replies: 1
Views: 44

Re: Issue with ZX Spectrum +2 keyboard

My first suggestion would be to open the Spectrum, remove the keyboard from the top half of the case. Pop the metal backing plate off the keyboard and have a look at the keyboard membrane. If you bought it off eBay there is a good chance inside is filthy and the membrane is covered in gunk. Clean it...
by Morpheus
Thu Oct 04, 2018 8:59 am
Forum: Other Retro Stuff
Topic: Sad news that another retro legend has passed away - Ben Daglish
Replies: 6
Views: 312

Re: Sad news that another retro legend has passed away - Ben Daglish

Yes, I was stunned when I read this. Very sad news and way too young.
by Morpheus
Mon Oct 01, 2018 6:46 am
Forum: Games/Software
Topic: The best classic Speccy game beginning with R: vote
Replies: 30
Views: 884

Re: The best classic Speccy game beginning with R: vote

R-Type for me as well, brilliant game.
by Morpheus
Fri Sep 21, 2018 3:23 pm
Forum: Hardware
Topic: Noisy Audio on Taiwanese +2
Replies: 19
Views: 340

Re: Noisy Audio on Taiwanese +2

So, if you use a newer, regulated PSU, does it make a difference noise-wise? Yes noise is improved by using modern power supply compared to the old Sinclair/Amstrad one. I changed some of the ceramic capacitors around the the power in and that helped a little bit as well and also the new 7805 Regul...
by Morpheus
Fri Sep 21, 2018 12:45 pm
Forum: Hardware
Topic: Noisy Audio on Taiwanese +2
Replies: 19
Views: 340

Re: Noisy Audio on Taiwanese +2

What PSU are you using with your +2? I have the original power supply and the noise using that is very bad. I have a new 9V 2A Power Supply and it doesn't look a cheap and nasty one but I could not tell really it's made by someone called Akuru. I normally use Goodleads as the ones they ship have a ...
by Morpheus
Fri Sep 21, 2018 10:14 am
Forum: Hardware
Topic: Noisy Audio on Taiwanese +2
Replies: 19
Views: 340

Re: Noisy Audio on Taiwanese +2

I have been having a go at this +2 this morning. I have replaced some of the decoupling capacitors on the power circuit and fitted a new 7805CV Voltage Regulator and the noise has diminished to the point where I can hear the Beeper sound/music on normal volume levels.... Maybe it was the VR after al...
by Morpheus
Fri Sep 21, 2018 6:28 am
Forum: Hardware
Topic: Noisy Audio on Taiwanese +2
Replies: 19
Views: 340

Re: Noisy Audio on Taiwanese +2

My +2 Grey has always had a loud hum to the sound. I've owned it since the release of 1986. As you stated, it is possible to hear it working as the screen is being drawn in a BASIC listing, the high pitched whine when enter is pressed and changing colours can make it musical. 5 LET A=20 10 BORDER 0...
by Morpheus
Thu Sep 20, 2018 1:02 pm
Forum: Hardware
Topic: Noisy Audio on Taiwanese +2
Replies: 19
Views: 340

Re: Noisy Audio on Taiwanese +2

Hi I have replaced the two resistors as listed and the audio is more equal coming out of the mono socket. The noise is still there though and drowns out any Spectrum audio at normal levels. The audio off the little Module fitted to pins 1,4,5,6 of the AY chip has nice clear audio so it would seem to...
by Morpheus
Wed Sep 19, 2018 5:06 pm
Forum: Hardware
Topic: Noisy Audio on Taiwanese +2
Replies: 19
Views: 340

Re: Noisy Audio on Taiwanese +2

Update:

I disconnected the flylead from Pins 34,35 of the ULA and the noise is gone but so is the Beeper sound now. I need to find a way to filter that signal or tap in somewhere else.
by Morpheus
Wed Sep 19, 2018 4:21 pm
Forum: Hardware
Topic: Noisy Audio on Taiwanese +2
Replies: 19
Views: 340

Re: Noisy Audio on Taiwanese +2

I had an RGB Lead from Retrocomputershack connected for the picture and first some headphones and then the powered mini PC speakers in the 3.5 Stereo Jack of the Internal mod. I have it connected to pins 1,4,5,6 ( A,B,C & Gnd ) and the flylead connected to pins 34,35 of the ULA as per the destructio...