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'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
TR4, TR5, a coil, a power socket, an sr10s05 regulator and some capacitors ordered... exciting! :D -
48k Spectrum "Jail Bars" Removal?Hi all Just curious I think I saw a post here about the bars that go down the screen on some 48k's I think he referred to them as "jail bars". Any…
... possible that the 220 uH coil can substitute entirely R62 ... R15 with a 220 uH coil. Now I measure 35 ... series with the 220 uH coil. Measurement on C45 goes ... then, that the 220 uH coil does not much.
< ... .
2) The coil dos not lower ripple. Will ... -
48k Spectrum "Jail Bars" Removal?Hi all Just curious I think I saw a post here about the bars that go down the screen on some 48k's I think he referred to them as "jail bars". Any…
... kHz from the TR4/TR5/coil switching circuit
[*]Various frequencies ... outputs from the TR4/TR5/coil switching circuit would also help ... -
Spectrum 48k ProblemsHi all Got my 48k today but it's playing up abit... First time i turn it on it was like this: [IMG]http://s26.postimg.org/hlg9d3f3d/IMG_20140830_…
... new board has a quieter coil and also hasa proper Zilog ... -
48k Spectrum "Jail Bars" Removal?Hi all Just curious I think I saw a post here about the bars that go down the screen on some 48k's I think he referred to them as "jail bars". Any…
For me, the added coil did reduce ripple at LM1889 ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... I install the transistors and coil? There don't appear to ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... be sure.
The coil can only be installed one ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... both, along with the new coil, power socket, capacitor for C47 ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... , a burning smell appeared, the coil buzzing stopped and the speccy ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... circuit (TR4, TR5 and the coil etc.).
Also with ... of TR4, TR5 and the coil. If TR4, TR5 or the ... coil is faulty, the -5V supply ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... line that comes from the coil and goes into the regulators ... -
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... either TR4 died, or the coil died.
It's ... -
Giving up on SpectrumsHi all... Bit of a downer post here... I'm really close to giving up on Spectrums.. My 48k has given me nothing but head aches since day one... and …
... completely dead... no buzz from coil, no TV output... nothing...
'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... fried upper ram
[*]Power coil likely broken (no noise)
coil, TR4 and TR5, to see ...'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... 'd hold off on the coil for now, rare enough for ...'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... 'd hold off on the coil for now, rare enough for ...ZX Spectrum upper RAM module (4532/4164 replacement)Following the [URL="http://zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have been quite a lot of requests for something similar for th…
... converter fitted and the Speccy coil removed (disabling the Speccy +12v ...'Interesting' Issue 2 modSo I've been lurking on this forum for a while and I've got to the point where I want to see if I can repair a speccy.. so I bought me a 'broken' one…
... = I can now hear the coil buzzing away when the board ...Short Circuit Damage?Hey Spectrum fans, Currently trying to diagnose what is wrong with my 48K Issue 4B ZX Spectrum. The initial problem was the fact it would not boot -…
... TR4 (along with TR5, the coil and various other bits) generate ...Short Circuit Damage?Hey Spectrum fans, Currently trying to diagnose what is wrong with my 48K Issue 4B ZX Spectrum. The initial problem was the fact it would not boot -…
I always change TR4 and TR5 at the same time, as if one is bad it can take out the other.
The official advice is originally to actually change TR4, TR5 [i]and[/i] the coil, but that may be difficult these days!Smokin... more 48k woesHi, it looks like I've converted another Spectrum 48K+ into a smoke machine. I'd been rebuilding an Opus Discovery unit and everything looked good. …
... by TR4, TR5 and the coil, the voltage on +12V line ...48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…
... , which I assume is the coil, but that goes away once ...128K Toastrack - Missing coil?Hiya! I recently acquired a fleabay 128K, and before putting power through it, I thought i'd open it up to see if anything looked obviously wrong (e…
It's not "the coil", the space is reserved for ...128K Toastrack - Missing coil?Hiya! I recently acquired a fleabay 128K, and before putting power through it, I thought i'd open it up to see if anything looked obviously wrong (e…
Your Sinclair, Issue 10 Oct 1986 (Great Escape cover) page 33 has a picture of the board with the coil.
[url]ftp://ftp.worldofspectrum.org/pub/sinclair/magazines/YourSinclair/Issue10/Pages/YourSinclair1000033.jpg[/url]128K Toastrack - Missing coil?Hiya! I recently acquired a fleabay 128K, and before putting power through it, I thought i'd open it up to see if anything looked obviously wrong (e…
... is a issue 6K with coil
[url]http://hardware ... ), nome of them have the coil
Bye
Cooking toastrack... the dreaded smellI powered up my Spectrum 128 (heatsink model) yesterday only to see what looked like an out-of-tune picture on the television. I'm using a scart adap…
... , or an issue with the coil.
One point to ... /> 3) Checking continuity on the coil on each side, and checking ...Cooking toastrack... the dreaded smellI powered up my Spectrum 128 (heatsink model) yesterday only to see what looked like an out-of-tune picture on the television. I'm using a scart adap…
What Balford said. :) It's probably (almost certainly) a short circuit somewhere from a damaged track. It could be the coil, but it's unlikely. Check the resistance between the -5V and ground and +12V and ground.
As he says, don't give up!Cooking toastrack... the dreaded smellI powered up my Spectrum 128 (heatsink model) yesterday only to see what looked like an out-of-tune picture on the television. I'm using a scart adap…
... refer to the coil, is that the little coil next to the ...Cooking toastrack... the dreaded smellI powered up my Spectrum 128 (heatsink model) yesterday only to see what looked like an out-of-tune picture on the television. I'm using a scart adap…
... refer to the coil, is that the little coil next to the ... />
As far as the coil goes, it's right beside ... TR4/TR5, and marked 'COIL' in your photo above :)
coil. Test both left hand pins ...
