Help with Sony BVM-2011P - Page 3 - UK Vintage Radio Repair and Restoration Discussion Forum

AC/HL · 3rd Jul 2015, 8:29 pm

Yes, any/all negotiation via PM please. Let us know the final outcome though.

julie_m · 4th Jul 2015, 7:19 am

With two monitors, and knowing one of them is a worker and what the fault is on the other, you could even isolate the fault down to one of the swappable cards (or the motherboard), by exchanging one card at a time between the units. Swapping the faulty card will fix the broken monitor and break the working one. Or if no card makes a difference, then the fault must be on the main unit.

My money would be on a faulty CMOS analogue switch IC, probably a 4053 or 4066 quite near to the external sync socket. But get that second monitor and try it. And even if you can't fix the one you've already got, you might be able to sell it as not working with a note as to which of the plug-in cards is faulty -- someone out there with time on their hands and/or circuit diagrams might well consider it an easy enough fix to be worth taking on.

HandofIke · 4th Jul 2015, 8:34 pm

AJS

That sounds like a great idea!

Thanks

PS I have diagrams for the unit and each individual cards....

Cheers

crabfists · 19th Jul 2015, 5:21 pm

@HandofIke Just curious if you got a resolution to your problem? I have just bought a BVM-2011P and I am having the same sync problem.

Would love to know if you managed to sort it out.

HurtyAC · 19th Jul 2015, 10:50 pm

Hi, I have worked on the BVM2010 series monitors extensively. The BVM2011 was a cheaper monitor I think if memory serves me correctly had a cheaper PIL tube fitted. The 2010 tube was over £2000 to replace in 1990 and had a resolution of 900 lines. Not bad for an SD monitor. I'll see if I can get my hands on the BVM2011 monitor manual and if so I'll PM you to see if you can bring it over as I'm only just down the road from you. Give me a week first as I work a shift pattern to get back to you

HandofIke · 20th Jul 2015, 12:31 am

Wow!! Thank you so much!!

HurtyAC · 2nd Aug 2015, 1:10 pm

Hi All, First of all the BVM2011 is indeed the same as the BVM2010 except it has the electronic control circuitry and control board. The cheaper monitor that looks the same is the BVM2015 which does use a PIL tube and is no were near a match to the 2010/11. Monitor arrived last night for repair so got on to it this morning and indeed no sync, internal or external. First thing to do with these monitors is to check the control board below the control switch board for surface mount electrolytic capacitor leakage. So far this monitor is not showing any signs of this. Next is to check for sync into the sync processing board (BJ), this was absent. Moved on to the video input board (BA). On this particular monitor it is the later BA3 board which uses surface mounted components so differs from the one in the supplied pdf. Checked sync off this board and indeed non present. See pictures. To be continued

Hurty

HurtyAC · 2nd Aug 2015, 2:04 pm

Hi All, Part two of the repair! So no sync off the input/sync separator board BA3. Video present on transistor Q701's emitter (see attached diagram), and present on Q702's collector but no video present on Q704's collector. After d.c. checks found Q703's was not being biased on and Q704's emitter base junction had 1.1 volts (d.c.) across it forward biased!! These transistors are surface mounted so out with the soldering iron, Q704 replaced and we now have a working sync separator, why use on transistor when you can use 17. Set now up and running after a bit of tweaking, see picture.

Hurty

Nickthedentist · 2nd Aug 2015, 6:54 pm

Very impressed! Another one saved. Well done.

John123 · 2nd Aug 2015, 9:29 pm

Great work! I'm surprised it wasn't one or more of those dreaded surface mount capacitors, as they always seem to go bad in equipment this age. I guess these ones must be much better quality.

HandofIke · 4th Aug 2015, 1:20 pm

Well as those who are following this thread know, HurtyAC has kindly (and that is a massive understatement) repaired my poorly BVM....

Goes without saying that I am over the moon!! I can't wait to pick the monitor up and start getting things through that beautiful tube!!

Above all I'd like to publicly thank HurtyAC who is a fantastically kind and generous guy, very interesting and knowledgable. I'm so stoked that someone could be so helpful. The guy is a genius in my book!!

I'd also like to thank all those who contributed to this thread, I am most grateful for your time.

Looking forward to getting my BVM home!

Kind regards

Paul

HandofIke · 4th Sep 2015, 11:49 pm

Hi all,

Just to follow up and show you the BVM working and looking fantastic here are a couple of videos.

So very pleased with the outcome and so very greatful to HurtyAC for a fantastic job!!!

This is the BVM with a TV output

https://youtu.be/GbG6uc6fl8s

And this is an X-Box 360 showing Akai Katana

https://youtu.be/FzCUxmpxViM

Please note I am playing this game one handed whist holding the camera, I'm not THAT bad at shooters!!

3rd Jul 2015, 8:29 pm	#41
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Help with Sony BVM-2011P Yes, any/all negotiation via PM please. Let us know the final outcome though.

4th Jul 2015, 7:19 am	#42
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Help with Sony BVM-2011P With two monitors, and knowing one of them is a worker and what the fault is on the other, you could even isolate the fault down to one of the swappable cards (or the motherboard), by exchanging one card at a time between the units. Swapping the faulty card will fix the broken monitor and break the working one. Or if no card makes a difference, then the fault must be on the main unit. My money would be on a faulty CMOS analogue switch IC, probably a 4053 or 4066 quite near to the external sync socket. But get that second monitor and try it. And even if you can't fix the one you've already got, you might be able to sell it as not working with a note as to which of the plug-in cards is faulty -- someone out there with time on their hands and/or circuit diagrams might well consider it an easy enough fix to be worth taking on. __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.

4th Jul 2015, 8:34 pm	#43
HandofIke Retired Dormant Member Join Date: Jun 2015 Location: Stevenage, Hertfordshire, UK. Posts: 27	Re: Help with Sony BVM-2011P AJS That sounds like a great idea! Thanks PS I have diagrams for the unit and each individual cards.... Cheers

19th Jul 2015, 5:21 pm	#44
crabfists Retired Dormant Member Join Date: Jul 2015 Location: Warrington, Cheshire, UK. Posts: 1	Re: Help with Sony BVM-2011P @HandofIke Just curious if you got a resolution to your problem? I have just bought a BVM-2011P and I am having the same sync problem. Would love to know if you managed to sort it out.

19th Jul 2015, 10:50 pm	#45
HurtyAC Tetrode Join Date: May 2009 Location: Ware, Hertfordshire, UK. Posts: 75	Re: Help with Sony BVM-2011P Hi, I have worked on the BVM2010 series monitors extensively. The BVM2011 was a cheaper monitor I think if memory serves me correctly had a cheaper PIL tube fitted. The 2010 tube was over £2000 to replace in 1990 and had a resolution of 900 lines. Not bad for an SD monitor. I'll see if I can get my hands on the BVM2011 monitor manual and if so I'll PM you to see if you can bring it over as I'm only just down the road from you. Give me a week first as I work a shift pattern to get back to you

20th Jul 2015, 12:31 am	#46
HandofIke Retired Dormant Member Join Date: Jun 2015 Location: Stevenage, Hertfordshire, UK. Posts: 27	Re: Help with Sony BVM-2011P Wow!! Thank you so much!!

2nd Aug 2015, 1:10 pm	#47
HurtyAC Tetrode Join Date: May 2009 Location: Ware, Hertfordshire, UK. Posts: 75	Re: Help with Sony BVM-2011P Hi All, First of all the BVM2011 is indeed the same as the BVM2010 except it has the electronic control circuitry and control board. The cheaper monitor that looks the same is the BVM2015 which does use a PIL tube and is no were near a match to the 2010/11. Monitor arrived last night for repair so got on to it this morning and indeed no sync, internal or external. First thing to do with these monitors is to check the control board below the control switch board for surface mount electrolytic capacitor leakage. So far this monitor is not showing any signs of this. Next is to check for sync into the sync processing board (BJ), this was absent. Moved on to the video input board (BA). On this particular monitor it is the later BA3 board which uses surface mounted components so differs from the one in the supplied pdf. Checked sync off this board and indeed non present. See pictures. To be continued Hurty Attached Thumbnails

2nd Aug 2015, 2:04 pm	#48
HurtyAC Tetrode Join Date: May 2009 Location: Ware, Hertfordshire, UK. Posts: 75	Re: Help with Sony BVM-2011P Hi All, Part two of the repair! So no sync off the input/sync separator board BA3. Video present on transistor Q701's emitter (see attached diagram), and present on Q702's collector but no video present on Q704's collector. After d.c. checks found Q703's was not being biased on and Q704's emitter base junction had 1.1 volts (d.c.) across it forward biased!! These transistors are surface mounted so out with the soldering iron, Q704 replaced and we now have a working sync separator, why use on transistor when you can use 17. Set now up and running after a bit of tweaking, see picture. Hurty Attached Thumbnails

2nd Aug 2015, 6:54 pm	#49
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,864	Re: Help with Sony BVM-2011P Very impressed! Another one saved. Well done.

2nd Aug 2015, 9:29 pm	#50
John123 Heptode Join Date: Jan 2007 Location: Luton, Bedfordshire, UK. Posts: 891	Re: Help with Sony BVM-2011P Great work! I'm surprised it wasn't one or more of those dreaded surface mount capacitors, as they always seem to go bad in equipment this age. I guess these ones must be much better quality. __________________ Regards, John

4th Aug 2015, 1:20 pm	#51
HandofIke Retired Dormant Member Join Date: Jun 2015 Location: Stevenage, Hertfordshire, UK. Posts: 27	Re: Help with Sony BVM-2011P Well as those who are following this thread know, HurtyAC has kindly (and that is a massive understatement) repaired my poorly BVM.... Goes without saying that I am over the moon!! I can't wait to pick the monitor up and start getting things through that beautiful tube!! Above all I'd like to publicly thank HurtyAC who is a fantastically kind and generous guy, very interesting and knowledgable. I'm so stoked that someone could be so helpful. The guy is a genius in my book!! I'd also like to thank all those who contributed to this thread, I am most grateful for your time. Looking forward to getting my BVM home! Kind regards Paul

4th Sep 2015, 11:49 pm	#52
HandofIke Retired Dormant Member Join Date: Jun 2015 Location: Stevenage, Hertfordshire, UK. Posts: 27	Re: Help with Sony BVM-2011P Hi all, Just to follow up and show you the BVM working and looking fantastic here are a couple of videos. So very pleased with the outcome and so very greatful to HurtyAC for a fantastic job!!! This is the BVM with a TV output https://youtu.be/GbG6uc6fl8s And this is an X-Box 360 showing Akai Katana https://youtu.be/FzCUxmpxViM Please note I am playing this game one handed whist holding the camera, I'm not THAT bad at shooters!!