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One more grey +2 with video problemsI guess I need your help again to hopefully be able to do some proper troubleshooting myself one day. Here I have a grey +2, which could be a bottom…
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Okay, with the desoldered C41 I can see increasing values ... -
One more grey +2 with video problemsI guess I need your help again to hopefully be able to do some proper troubleshooting myself one day. Here I have a grey +2, which could be a bottom…
... ;732744]Okay, with the desoldered C41 I can see increasing values ... -
Faulty grey +2, or not?While I?m still fighting with two to three grey +2 computers, which doesn?t give a video signal, I received another grey +2, which acts very strangel…
... types, such as Polyester film, ceramic disk etc. It's ok ... -
Zx Spectrum+ Issue 6 yellow screenHi boys, recently i found a zx spectrum+ issue 6 that just turned on displays a screen with too much yellow exactly as in the picture below: [IMG]ht…
I have never seen that on anything other than an issue 2 before My main suspects would be the ceramic capacitors or resistors around the LM1889 chip. -
ZX Spectrum 48k - no CLK signalHello I'm trying to repair ZX Spectrum 48 mainboard issue 3B. When i check signal with oscilloscope on X1 or on ULA pin 39. I get stable 2V no clock…
... have replaced C73 with 15pF ceramic capacitor. Someone has changed it ... -
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…
... (the resistor shaped ceramic capacitors or disc type ceramic types) in the ... chips with 1uF modern multilayer ceramic capacitors. Note these should be ... -
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…
... -Components/1uf-5mm-Y5v-Dielect-Ceramic-Capacitor-08-1100"]1uF multilayer ... ceramic types[/URL] (5mm lead spacing ... should fit most boards). Multilayer ceramic types have a much, much ... -
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…
... machine (ISSUE 4B) with new ceramic capacitors. Probably I will change ... the ones to ceramic in the ISSUE3B as well ... -
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…
... switched from electrolyte capacitors to ceramic ones on the ISSUE 3B ... , the electrolyte has 20%, the ceramic has +80-20% tolerance) With ... -
Just brought my first ZX Spectrum+ help please!I need some help please guys! Just brought my first ZX Spectrum +, I never had one of these back in the days so I know nothing about them! All is …
... audio input being moved from C41 to C48. So no, you ... -
Is the +3b a myth or just rare?I have a few speccies, one of them being a +3 with terrible sound (terrible that is, until I did a minor mod to replace some resistors, now the sound…
... +3 and +3Bs have a ceramic resonator here. The photo in ... have crystals and which have ceramic resonators be my guest. I ... -
Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
... would be needed. Can a ceramic capacitor 47pF/25V be replaced ... -
Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
In general, yes, caps with higher voltage ratings can be used without any issues as replacements. Any ceramic multilayer types should do.
(Sorry for not replying sooner - blame the hamsters in the server :))
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Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
[QUOTE=schombi;750700]Can a ceramic capacitor 47pF/25V be replaced ... higher voltage rating is okay. Ceramic capacitors are produced in fewer ... -
Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
... way, which way does a ceramic capacitor need to be soldered ... -
Almost no picture on a toastrack Issue 6UI?d need some help with a toastrack, that hardly shows any picture on both the RF and RGB. It?s totally distorted. I had this before and I remembered…
Did not know that about ceramic capacitors - thanks!
I ... -
+2 Grey video issueSo far ive replaced TR4, TR5 (and correctly orientated them) and seperated the audio from the video, still I have this; [youtube]mZZWOXRs_Zk[/youtube…
Ok, what voltage reading do you get from the positive side of C41?
Maybe TR8/TR9 (ZTX213/ZTX650) need replacing after all!
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PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…
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There already are: ceramic non-smd at the IC ... -
+2 Tape Deck - blue wireFound that the blue wire that connects to the Z70501 tape circuit board has broken off, to what part should it be resoldered to - please a nice clear…
... (mine is connected via a ceramic capacitor, there when I got ... -
+2a modified for OTLAok just wanted some help here as i wanted to use OTLA on my +2A. Now i know i cant put the data on to tape as it just don't work (already tried it). …
... capacitor in the position marked C41...
Of course your ... -
5C series NTSC ULA 5C114E 8248Not sure if this has been mentioned before; I haven't seen anything about it online. Chris Smith's book discusses 6C011E as the NTSC ULA sold in Spec…
... any other board?
Ceramic 4532's for good measure ... -
5C series NTSC ULA 5C114E 8248Not sure if this has been mentioned before; I haven't seen anything about it online. Chris Smith's book discusses 6C011E as the NTSC ULA sold in Spec…
... any other board?
Ceramic 4532's for good measure ... -
TEA2000 mod for better CVBS quality?Has anyone tried this before? :confused: [URL=http://s1063.photobucket.com/user/JRT480/media/Evenmoreperfect_zpse2505ab9.jpg.html][IMG]http://i1063…
... for the coil and the ceramic capacitor and I *think* that ... uH coil and a 47pF ceramic capacitor gives the best compromise ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... all electrolytic capacitors, replaced small ceramic capacitors near RAM chip.
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... run a short length of ceramic wire between the damaged pad ...Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
C72 and C73 are both 16pF (at least that's what it says on the schematic, I don't have a issue 4 or similar Spectrum open to confirm). So I presume they are ceramic "disc" types.
[I][B]Mark[/B][/I]Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... ). So I presume they are ceramic "disc" types.
[I ...New Spectrum User - Inveterate UpgraderI've been asking a few questions about my Speccy, which is the first I've owned despite my advancingh years. I was a C64 kid, but please don't hold …
... 't seem to find any ceramic caps of 1μF in ... .co.uk/itm/1uF-50V-Ceramic-multilayer-MLCC-Capacitors-Qty-10 ...
