-
Toaster grey screenIv just fired up my toaster and it has a grey screen. I can still see the menu which still works ok. It looks as if someone has painted the front of …
... fault with TR8/TR9, the coil or other components that generate ... -
Toaster grey screenIv just fired up my toaster and it has a grey screen. I can still see the menu which still works ok. It looks as if someone has painted the front of …
... is, just next to the coil.
But in order ... -
New stereo kitsWill be testing these next week: [IMG]http://www.benophetinternet.nl/hobby/vanmezelf/SAM_0631.JPG[/IMG] [IMG]http://www.benophetinternet.nl/hobby/v…
... to the white cable. The coil of the 5V relais should ... -
Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... notable change - BZZZZZZZ from the coil
Multimeter gave a ... -
Issue 1 schematics?I'm fault-finding an issue 1 board. So far I've found a hot memory chip and snipped it's supply legs, then swapped the burnt-out 7805 for a switched…
... 'm missing the -5V (no coil buzz either). -
Faulty 48+ Help NeededHi, This is what I get when I plug in the spectrum, this is tuned in. Vid shows a reset. Any ideas, or pointers on the first thing to check. Keyboa…
... the healthy buzz from the coil, plenty of colour on screen ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... be soldered were inside the coil then surely this would mitigate ... effect" .
How to coil ? Well I could get a ... the right thickness and simply coil around it. This could work ... -
Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... thin wire, to form the coil, it is best to use ... -
Power issues on a 6A 48 K SpectrumHello all! I decided to take another look at my 6A Spectrum that I broke via a bad joystick adapter, I’ve removed the bottom 16K ram and replaced…
... , and specifically TR4, TR5 and coil, are working properly. Stop checking ... -
Switched voltage regulatorIn the past a replacement voor the (hot!) 7805 has popped up a couple of times in various threads. As far as I know, Recom Power Inc. was always ment…
Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…
... "]I inserted a 220 uH coil in the +12VA line going ... of R62 and put the coil between R62 and board). That ... the dc resistance of the coil?Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…
... two windings of the inductor coil. TR4 very often (though not ...Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…
... / ULA supply lines. A suitable coil in series may do wonders ...Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…
... / ULA supply lines. A suitable coil in series may do wonders ...Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…
... "]I inserted a 220 uH coil in the +12VA line going ... of R62 and put the coil between R62 and board). That ... 's advice I soldered the coil in series with R62, which ...Help with Spectrum 128k reparationHi! I have the following symptoms with a 128k unit version 6U - On power on, black and white bars (one char width each), white background - Once po…
Ok, this may help: I hear no buzz from the coil... Does that mean that it may be faulty? 5, 12 and -5 V supply lines have proper values... How can I test if the coil has died?Help with Spectrum 128k reparationHi! I have the following symptoms with a 128k unit version 6U - On power on, black and white bars (one char width each), white background - Once po…
... hear no buzz from the coil... Does that mean that it ... can I test if the coil has died?[/quote]
The ...May the "How to do it" bullet pointing commence!"You Tube" does not cover everything ZX Spectrum realted There are now so many ways to use ZX Spectrum related stuff. And therefore therefore ther…
... turntable as magnetic or moving coil pick-up cartridges used in ...Dead 48k and +2I have a couple of questions. My old 48k had a very wobbly power socket so bought a new one and soldered it on. It will not work at all now? Is ther…
... buy an old analogue / moving coil needle type.
A ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... ceramic) and one inductor (choke / coil) per output rail. So for ... between the primary coil winding and the secondary coil winding.[/list]
Issue 3b boarddiode ID5 and cap C47 are missing from my board will these have any effect on system powering up. I have checked the voltages on the 7508 and its …
... the burned resistor across the coil and that 100R one on ...+2 Grey - bluey about to blowI've been turning the TR4 bits around inside my Spectrun +2 Grey issue 3 and noticed that it looks like the blue guy is about to burst.... (I had ph…
... 's an inductor, a small coil of wire encapsulated inside a ...12V ripple with lower ram installedI repaired a speccy this week. Before doing anything I replaced all caps and measured the transistors in the power section. When doing this I found t…
... that C50 and the regulator coil are getting hot, especially the ... coil.
I did this with ... measure any shorts inside the coil itself.12V ripple with lower ram installedI repaired a speccy this week. Before doing anything I replaced all caps and measured the transistors in the power section. When doing this I found t…
I am trying to understand why C50 and the coil are getting warm (almost hot). C50 is right behind the 9V input. I changed it already, but this made no difference.12V ripple with lower ram installedI repaired a speccy this week. Before doing anything I replaced all caps and measured the transistors in the power section. When doing this I found t…
... decided to change the regulator coil, as it was getting hot ... problem of c50 and the coil getting hot. Now I had ...12V ripple with lower ram installedI repaired a speccy this week. Before doing anything I replaced all caps and measured the transistors in the power section. When doing this I found t…
Excellent, the coil must have been partially shorted by a winding or two.
BNot bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... making a note of which coil and side they are from ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... the winding with THIN wired coil not to the THICK wired ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... glass fibre reinforcement to the coil box casing.
At ...
