Search found 3846 matches

by grantspain
Today, 8:32 am
Forum: SuperGun Q&A
Topic: System 256 and Boardmaster Supergun
Replies: 4
Views: 43

Re: System 256 and Boardmaster Supergun

you will need at least 5v at the system 246 power input header
by grantspain
January 18th, 2019, 8:19 am
Forum: Monitor Q&A
Topic: Monitor replacement help on blast city + windy2
Replies: 8
Views: 305

Re: Monitor replacement help on blast city + windy2

you need an inductance meter- it looks like a multimeter
https://www.ebay.com/itm/A6243L-Digital ... rk:23:pf:0
by grantspain
January 17th, 2019, 8:13 am
Forum: Monitor Q&A
Topic: Monitor replacement help on blast city + windy2
Replies: 8
Views: 305

Re: Monitor replacement help on blast city + windy2

8bitforlife wrote:
January 17th, 2019, 3:19 am
im thinking those numbers are for ohm and not what number you needed to know if a 2931 will work,
thats the impedance readings, i need the inductance readings
by grantspain
January 11th, 2019, 6:19 am
Forum: Monitor Q&A
Topic: Tube and Chassis cleaning
Replies: 2
Views: 188

Re: Tube and Chassis cleaning

water inside coils and caps is a serious concern, when i wash chassis i do it before i put new caps in and i remove and open coil/ transformer and then make sure the chassis is bone dry
by grantspain
January 4th, 2019, 11:24 pm
Forum: Monitor Q&A
Topic: Monitor replacement help on blast city + windy2
Replies: 8
Views: 305

Re: Monitor replacement help on blast city + windy2

the sanwa will be a 29es31s, you can use a weiya 3129a or rodotron 666a on these tubes what is the chassis that is marked A68KSM696X 31khz only He'll have to go down to storage to see. My friend said some op had written 31z only on it at the top. Can I use my nanao 2931 on A68KSM696X? depends on th...
by grantspain
January 4th, 2019, 9:21 am
Forum: Monitor Q&A
Topic: Monitor replacement help on blast city + windy2
Replies: 8
Views: 305

Re: Monitor replacement help on blast city + windy2

the sanwa will be a 29es31s, you can use a weiya 3129a or rodotron 666a on these tubes
what is the chassis that is marked A68KSM696X 31khz only
by grantspain
December 30th, 2018, 10:39 pm
Forum: Monitor Q&A
Topic: Toshiba LR27012 Zapping - I want to live again!
Replies: 5
Views: 169

Re: Toshiba LR27012 Zapping - I want to live again!

means exactly that, the ht is directly connecting to an earth point/ metal work- would happen if the ht lead has come out of the anode or the flyback is cracked and is arcing to to the frame somewhere
by grantspain
December 30th, 2018, 7:06 pm
Forum: Monitor Q&A
Topic: Toshiba LR27012 Zapping - I want to live again!
Replies: 5
Views: 169

Re: Toshiba LR27012 Zapping - I want to live again!

that is no normal HT tracking issue, that is either the tube fractured or direct HT to earth
by grantspain
December 30th, 2018, 12:21 pm
Forum: Monitor Q&A
Topic: Toshiba LR27012 Zapping - I want to live again!
Replies: 5
Views: 169

Re: Toshiba LR27012 Zapping - I want to live again!

you need to remove the metal plate and see where the arcing is coming from, perhaps the anode cap has fallen off
by grantspain
December 29th, 2018, 11:19 am
Forum: Monitor Q&A
Topic: MS 2930-S replacement chassis
Replies: 2
Views: 90

Re: MS 2930-S replacement chassis

df is dual focus/ dyna focus, it means there are 2 focus pins on the neck so will not fit 2930 tube- also the yoke impedance is different
the correct chassis is weiya 3129b or a rodotron 666b1-29- the 15khz will have more pronounced scan lines than the original chassis
by grantspain
December 26th, 2018, 3:42 pm
Forum: Monitor Q&A
Topic: Is the Makvision chassis compatible with Blast City Nanao Tube?
Replies: 19
Views: 410

Re: Is the Makvision chassis compatible with Blast City Nanao Tube?

Darklightjg1 wrote:
December 26th, 2018, 1:08 pm
Is the Wei-ya C3129DF chassis not compatible? I'm having a hard time finding anything that is specifically 3129b.
no that is a dual focus chassis for use on 0.300mh yokes
by grantspain
December 26th, 2018, 9:13 am
Forum: Monitor Q&A
Topic: 29Z21 compatibility
Replies: 2
Views: 106

Re: 29Z21 compatibility

yes works perfectly, you need to make an adapter for the deflection yoke as the sanwa is 4 pin and the ms9 is 2 pin + 2 pin and the vertical header is a smaller gauge
the rgb and manual degauss connector are also different
by grantspain
December 22nd, 2018, 8:45 am
Forum: Monitor Q&A
Topic: Is the Makvision chassis compatible with Blast City Nanao Tube?
Replies: 19
Views: 410

Re: Is the Makvision chassis compatible with Blast City Nanao Tube?

2930 i have a much better success rate, only ever had one 2933 to repair so can't say
by grantspain
December 21st, 2018, 6:55 pm
Forum: Monitor Q&A
Topic: Virtua Cop Monitor Help needed
Replies: 13
Views: 134

Re: Time Crisis Monitor Help needed

yes i agree, just got a bit warm which is normal

change the ic
by grantspain
December 21st, 2018, 6:44 pm
Forum: Monitor Q&A
Topic: Is the Makvision chassis compatible with Blast City Nanao Tube?
Replies: 19
Views: 410

Re: Is the Makvision chassis compatible with Blast City Nanao Tube?

nor does jomac, that gives an idea how time consuming these are
the 666b1 and 3129b are a lot easier to repair
by grantspain
December 21st, 2018, 6:38 pm
Forum: Monitor Q&A
Topic: Virtua Cop Monitor Help needed
Replies: 13
Views: 134

Re: Time Crisis Monitor Help needed

show me a photo of the coil
horizontal line across crt is vertical collapse and indeed affected by the la7837
by grantspain
December 21st, 2018, 3:43 pm
Forum: Monitor Q&A
Topic: Is the Makvision chassis compatible with Blast City Nanao Tube?
Replies: 19
Views: 410

Re: Is the Makvision chassis compatible with Blast City Nanao Tube?

could be flyback, hv caps, vertical circuit, hv regulation custom ic, b+ regulation circuit- just about anything and very difficult to fault find as chassis will shutdown at any fault condition if you were to ask me what would be the worst chassis in the world to attempt to fix as a beginner then th...
by grantspain
December 21st, 2018, 12:29 pm
Forum: Monitor Q&A
Topic: Is the Makvision chassis compatible with Blast City Nanao Tube?
Replies: 19
Views: 410

Re: Is the Makvision chassis compatible with Blast City Nanao Tube?

HOT sounds fine
chassis is shutting down immediately which is the normal fault you get on these
by grantspain
December 21st, 2018, 12:27 pm
Forum: Monitor Q&A
Topic: Virtua Cop Monitor Help needed
Replies: 13
Views: 134

Re: Time Crisis Monitor Help needed

l504 is lin coil, 41A42000340-A
i doubt you will find one except on another chassis
la7837 is vertical deflection ic and nothing to do with horizontal, L504 does though
by grantspain
December 21st, 2018, 7:36 am
Forum: Monitor Q&A
Topic: Is the Makvision chassis compatible with Blast City Nanao Tube?
Replies: 19
Views: 410

Re: Is the Makvision chassis compatible with Blast City Nanao Tube?

the ms2931 is probably the most difficult chassis to repair, they shutdown on any fault making it very difficult to fault find. The most common issue is HOT shorting which also takes out the FET in the power supply but this can be caused by problems with flyback and hv regulation either grab yoursel...