Search found 4027 matches

by grantspain
April 6th, 2020, 1:48 pm
Forum: Wanted
Topic: WTD Toshiba Pure Flat Chassis D29C051
Replies: 2
Views: 102

Re: WTD Toshiba Pure Flat Chassis D29C051

not terrible to repair as long as yaton not been at them first with his replacement 400amp fuses
by grantspain
April 5th, 2020, 1:23 pm
Forum: Monitor Q&A
Topic: Toei A292 Half Screen issue
Replies: 4
Views: 163

Re: Toei A292 Half Screen issue

carry on with replacing caps and if no change replace the ic, if i remember correctly that ic does an awful lot of work
by grantspain
April 5th, 2020, 9:58 am
Forum: Monitor Q&A
Topic: Toei A292 Half Screen issue
Replies: 4
Views: 163

Re: Toei A292 Half Screen issue

did you have the problem before you changed any caps?
by grantspain
April 2nd, 2020, 11:33 pm
Forum: Game Hardware Q&A
Topic: Silent Hill Arcade Issue
Replies: 6
Views: 336

Re: Silent Hill Arcade Issue

have you checked the voltages from the power supply
by grantspain
April 2nd, 2020, 12:21 pm
Forum: Cabinet Q&A
Topic: MS8-18B issue
Replies: 2
Views: 154

Re: MS8-18B issue

put it back to original and test, then do one pot at a time
by grantspain
April 1st, 2020, 5:22 am
Forum: Monitor Q&A
Topic: Troubleshooting a monitor for Street Fighter II
Replies: 2
Views: 158

Re: Troubleshooting a monitor for Street Fighter II

replace the broken pots, the value are normally marked on each pot or you can cross reference the schematic
by grantspain
March 31st, 2020, 10:05 pm
Forum: Monitor Q&A
Topic: Astro City MS9, red lines on dark background
Replies: 9
Views: 327

Re: Astro City MS9, red lines on dark background

you can do as said and up both the blue and green cut offs and adjust brightness if you have an overly red screen with no video signal attached then i would suggest you have a leaky diode or transistor in the red drive circuit, if not then the game board maybe at fault- if it is a drive issue then t...
by grantspain
March 29th, 2020, 10:20 pm
Forum: Monitor Q&A
Topic: Astro City MS9, red lines on dark background
Replies: 9
Views: 327

Re: Astro City MS9, red lines on dark background

red cut off is what you need-its on the main chassis
you may have a fault in the red drive circuit though
by grantspain
March 29th, 2020, 4:02 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

th901 then
by grantspain
March 29th, 2020, 2:20 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

they are not ground

you see the 22uf cap at c909- read the b+ there, it should be 96vdc black meter lead to negative and red meter lead to positive
by grantspain
March 29th, 2020, 1:06 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

cap ground
by grantspain
March 29th, 2020, 11:33 am
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

you have to use a cap ground for reading any voltages, do not use any metal work
by grantspain
March 28th, 2020, 11:12 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

if the ntc is reading 120ohm cold then its bad but its the first i have ever seen like this on this chassis- normally on other chassis they fracture and burn out
by grantspain
March 28th, 2020, 6:27 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

NTC 5-6 ohms is what you need
by grantspain
March 28th, 2020, 5:59 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

i am fixing a few of these tomorrow, i will let you know my readings
by grantspain
March 28th, 2020, 1:42 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

it will be the first of those faulty i have seen
you should check the b+ on the fuse, most likely you have a regulation circuit issue
by grantspain
March 28th, 2020, 12:51 pm
Forum: Monitor Q&A
Topic: Th901 broken on ms8-26A
Replies: 16
Views: 264

Re: Th901 broken on ms8-26A

probably about 9 ohms, they all look burnt
by grantspain
March 25th, 2020, 10:10 pm
Forum: Cabinet Q&A
Topic: Blast city monitor issue
Replies: 6
Views: 309

Re: Blast city monitor issue

yes exactly but be gentle
by grantspain
March 25th, 2020, 3:37 pm
Forum: Cabinet Q&A
Topic: Blast city monitor issue
Replies: 6
Views: 309

Re: Blast city monitor issue

looks like blue gun full on- could be neck card not home
by grantspain
March 19th, 2020, 4:12 pm
Forum: Monitor Q&A
Topic: Wei-Ya 3129BE Chassis work on a Hitachi A68KSA30X tube ???
Replies: 4
Views: 334

Re: Wei-Ya 3129BE Chassis work on a Hitachi A68KSA30X tube ???

deoends on the horizontal inductance of the yoke and of the chassis- the chassis inductance should be on a label and you would have to read the yoke with an inductance meter