Search found 29 matches

by rps
Wed Sep 26, 2018 9:59 am
Forum: Hardware
Topic: No image output...
Replies: 1
Views: 807

No image output...

Hi, I have a XX spectrum plus which I thought was working but just have no plug. I have one for it which works with my other spectrum. However when it is powered on and connected to the tv (I have tried multiple Ariel cables) there is no image output at all. Nothing comes through on the screen. One ...
by rps
Fri Jun 22, 2018 1:48 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

awesome. Will run that by my friend as he has the equipment. I’ll get back to you.

Thanks
RPS
by rps
Fri Jun 22, 2018 8:48 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Ok, just checked the chip with the heat sync definately in and it is 40c after 2 min, 45c after another minute and then after 5 min it is settling between 40 and 45c. Does that seem correct?

Thanks
by rps
Thu Jun 21, 2018 9:04 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi, Sorry for the delay getting back, work got in the way! We did the tests with it on as far as i am aware. However I did take it off at one point to look at the top end of the board so I am wondering if we then switched it on without the heat sync installed which is why it is hot! If it was run wi...
by rps
Tue Jun 19, 2018 11:15 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

I have neither another power supply or another meter.
My friend says he may be able to but it would take a week or more until he can.
by rps
Tue Jun 19, 2018 10:57 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

It’s the original I think...

Image
by rps
Tue Jun 19, 2018 10:47 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

I’m getting 4.9, 12 and -4.7 on ic6 to 13
4.9V on ic 15 to 22
5V on ic 23 to 26
The regulator is getting to 70C after a few minutes and the voltages are dropping to half
by rps
Tue Jun 19, 2018 9:50 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

On the lower ram they come in about half what they should be...
by rps
Tue Jun 19, 2018 8:06 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi,
Is there something in particular that I can check, such as chip and what pins?

I am guessing that is a huge question?
thabks
RPS
by rps
Tue Jun 19, 2018 3:58 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Erm, I have no idea about that, sorry can’t answer that question.

My friend if bringing my volt meter back tonight so will that help with anything?

Thanks
by rps
Tue Jun 19, 2018 2:49 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Sent the wrong photo!!!

Image

Image

Image
by rps
Tue Jun 19, 2018 2:39 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Here is the cpu closer. In real life it all looks original to me.

If you want a better photo, I can try get one for you?

Thanks

Image
by rps
Tue Jun 19, 2018 11:43 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Here’s a few photos. If you want anything specific let me know... https://s22.postimg.cc/b17hvplt9/7_A333837-9_CF9-4_E45-_A6_B7-1_D0034_C28_CC7.jpg https://s22.postimg.cc/7ucybo8yl/9_DBD883_B-2272-4_B27-9663-7290_A5556_A0_B.jpg https://s22.postimg.cc/jjgy01cwd/CEE05970-3583-4380-_A7_DD-555_BFE520_F3...
by rps
Tue Jun 19, 2018 11:31 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi,
No expansions to my knowledge and I can’t see any solder work that doesn’t look original either.

I will take some more photos for you...
by rps
Tue Jun 19, 2018 10:20 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi, Here is the image of IC23 and a wire from pin 5 to 14 as mentioned. Sorry it’s not a great image, I cracked the glass on my camera lens... So when I powered on this morning, no red lines. Turned off and plugged in again and got red verticle lines. I dont think it knows what is going on! Thanks R...
by rps
Mon Jun 18, 2018 1:04 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Ok, so you think lower ram possibly. Does this mean you can rule out upper ram? Or could it still be upper ram?

Also, if I was to get parts to make repairs and see where I get with it. Is there ways to test a chip when you remove it from the board?

Thanks
RPS
by rps
Mon Jun 18, 2018 12:28 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi, yes I get red vertical lines when the wire is attached. They stayed a couple of times when I turned it on however, other times I turned it back on they appeared then disappeared.

Thanks
RPS
by rps
Mon Jun 18, 2018 11:42 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Ok so holding the wire against the pins and soldering the wire to the pins does nothing different. Just white/grey edge with black paper, no logo or anything

Thanks
RPS
by rps
Mon Jun 18, 2018 11:19 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Oh dear :roll: can’t believe I did that! Well I will progress anyway and solder the wire to pins 5 and 14, then start up the machine.

Thanks
!!!!
by rps
Mon Jun 18, 2018 8:56 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi, It is a 4s model. So I did pins 5 to 14 and nothing happened. I did pin 14 to ground (7 was it?) that shuts the machine off and then comes back on when removed. I accidentally touched one of the other pins last night and it brought up lots of colou blocks which then disappear when power is remov...
by rps
Sun Jun 17, 2018 7:40 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi,
Do you know what number pin the +5v is on the IC23? Can’t find a pin diagram that shows it.

Thanks
RPS
by rps
Sun Jun 17, 2018 4:19 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

That's good, hoping to run that test laser this evening/ tomorrow morning. The screen that I do have booting up does tend to have quite a bit of noise on it. I would say some of my other consoles do too but I don't think it is as bad as on this one. Any way will try run the test and see from there. ...
by rps
Sun Jun 17, 2018 2:33 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Also, in reading all the info, the capacitors were mentioned in relation to the ram.
Is this something I may also need to consider? Or do you think that would be unlikely?

Thanks
Rps
by rps
Sun Jun 17, 2018 12:09 pm
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Cool, just reading over everyhting now including the last one RE: Dissabling the upper ram. I was wondering, if there is an issue with any of the ram, do the individual chips ever over heat at all? I checked them and they all seemed cold (same temp). Just wondered if that would have been an indicati...
by rps
Thu Jun 14, 2018 11:52 am
Forum: Hardware
Topic: Blank screen issue...
Replies: 63
Views: 14068

Re: Blank screen issue...

Hi guys, thanks for all the info and all the links. Think I will have to wait til the weekend to loook over everything.
Then I’ll be back on here and let you know how it goes!
FINGERS CROSSED :)

Thanks
Rps