Troubleshooting Guidelines

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Re: Troubleshooting Guidelines

Post by Dagger on Sat Apr 06, 2013 9:18 am

HI mga pipz..bago lang ako dito tapos kakaregister ko lang..Ultrasonic ask lang ako kung anung problema pag ang TV biglang nagblack out pero may tunog xa...sa Umpisa ay may picture tapos biglang nagblablack out..

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Re: Troubleshooting Guidelines

Post by Hertz on Sat Apr 06, 2013 11:21 am

hindi ako si sir ultra pero baka makatulong. check mo ang heater, crt socket at abl

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Re: Troubleshooting Guidelines

Post by kaholito on Thu May 30, 2013 9:53 am

ano po ba mganda panglagay sa anode cap para mas gumanda ang kapit sa tube nasingaw din ksi pag tape lng gamit.lalo na ung mga china board matigas ang cap.pede ba dun ung elmers glue?o rugby? Question

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Re: Troubleshooting Guidelines

Post by ultrasonic™ on Mon Jun 10, 2013 4:31 pm

kng pang kapit.. i highly recommend. ang insulated varnish.. pwde rin nmn ang rugby eh ang kaso nyan.. mahirap yan tanggalin... in the future.. mapoforce ka tlgang palitan ng ibang anode cap... with respect linis mode din...

regarding nmn sa mga china na anode cap... kong tipong deform xa sis.. o di kaya para sobrang tigas at parang toasted na pghawakan ay unti unting napupudpod ay you no choice na palitan yan ng ibang anode cap.. bunot ka nlng sa ibang mga unit.. khit sa mga surplus model... mas matibay un... kng my tagas mn ng HV sa dulo.. budbudan nyu nlng ng rubber tape...

@hertz.. tnx sa pgreply

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Re: Troubleshooting Guidelines

Post by Hertz on Thu Aug 15, 2013 5:44 pm

ultrasonic™ wrote:

@hertz.. tnx sa pgreply
walang anuman sir

dagdagan ko na rin sir. kahit itoy napaka basic. napaka useful naman nito sa mga tech

bago sana tayo umusad sa troubleshooting. check lagi baka may mga loose contact sa board.















minsan kasi nakakaligtaan natin ito Smile

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Re: Troubleshooting Guidelines

Post by ultrasonic™ on Sat Sep 14, 2013 5:37 pm

tnx sa mga share hertz.. +1 ulit

lipat ko na rin to dito

______________________________________________________________________________________


How to repair  Arch on Anode Cap  ^_^

1st kailangan mong idischarge muna ang CRT/picture tube kasi tulad din yan ng Big capacitor na nag iipon ng malakas na kuryente kahit nakapatay na ang unit.. by shorting the chassis ground (aguadag) to ultor (anode hole) madidischarge mo na yan...

ito ang 2 options mo to discharge
gamit ng isang screw driver na may nakaattach na wire at alligator clip.. ikagat sa alambre/chassis ground ng tube.. at ang flat end portion ng flat screw driver ay ipasok sa ilalim ng anode cap na sasadyain patamaan ang anode cap pin.. like this





second option is to use two screw drivers... same concept with the 1st option bali ang pinagkaiba lang ang isang screw driver ay ilalagay mo sa aguadag portion ng tube... kung mapapansin mo.. color grayish ang kulay ng body glass ng picture tube... yan ay parte ng aguadag/ground



Now, kng ang arching ay nasa gilid lng ng circular rubber (anode cap) like this



mas madali iyang ayusin.. tanggalin mu lng saglit ang Anode Cap sa ultor



then linising mabuti ang labas ng Ultor



by use of sand paper or rug cloths

pagsiguradong malinis na
apply kayo ng insulated varnish sa middle part ng circular end ng anode cap...



at ikabit nyu na ulit ang Anode cap



then apply ulit kayo ng varnish
sa both button at upper side ng Anode cap during & after kinabit na... ang purpose nyan ay to isolate the HV to jump into aguadag area.

then observe kong may tagas pa rin ba....

kung dito naman ang tagas..



palitan nlng agad ng panibagong Anode cap...


kung sa HV wire naman ang Tagas pwede budbudan nlng ng rubber tape

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Re: Troubleshooting Guidelines

Post by Oscar on Tue Oct 01, 2013 5:40 pm

mga master. salamat sa walang sayang pagtuturo crying puntos po

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Re: Troubleshooting Guidelines

Post by lhan on Mon Nov 11, 2013 1:05 pm

salamat mga masters,, dami ko natutunan dito,,para sa mga baguhan na tech tulad ko

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Re: Troubleshooting Guidelines

Post by james on Tue Nov 12, 2013 1:13 pm

Salamat mga master. Este sir admin.

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Re: Troubleshooting Guidelines

Post by kaholito on Fri Nov 22, 2013 10:55 am

paano po kumg putol na ang wire papuntang picture tube.?may na encounter po kasi ako pinutol ng gumawa ung wire mula sa gitna kinuha ung kalahati ksama ung cap.pano magdugtong ng hindi lalabas ang hv?pde bang natatanggal ba wire nun mula sa puno?sharp po ang flybak.

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Re: Troubleshooting Guidelines

Post by ultrasonic™ on Mon Nov 25, 2013 7:09 pm

kng pinutol ng dating tech ang gitnang HV wire...  like this one: 



ay pwde mo pa ulit idugtong.. tyagaan mo lng

idugtong mo lng ang 2 copper wire ng dalawang magkahilaway na HV wire.. tapos resolder



pgnatapoz ng maresolder ay lagyan mo ng pang isolate ng HV like stick glue, epoxy & etc...



kng wala nmn kayong pang isolate ay pwede diretso na kau mag wrap ng rubber tape.. medjo kapalan nyu lang para di tumagas



then test.. eye check during testing  ^_^
gudlak


Note: images courtesy of sis pete ng elab
pa ot: @sis pete pahiram muna  ^_^
@sis tukayo lhan.. newbie ka jan  ^_^

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Re: Troubleshooting Guidelines

Post by noyzky7 on Fri Dec 20, 2013 9:33 am

mga master help nman.. sori ot ito hinde ako mkagawa ng new topic dto sa thread.
may nerrepair ako unit promac cinematic 2100, normal lahat except walang ch7 to ch13, check ko tuner voltage specially vh and vl w/c is 5v.. vcc ng tuner w/c is 33v all normal.. ano kya sira nito?? TIA

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Re: Troubleshooting Guidelines

Post by Hertz on Sat Dec 21, 2013 1:13 pm

subukan mo i reprogram ang memory. may mga files naman na ipost rito - EEPROM

pag walang nagbago. may problema ang tuner module

sa paggawa ng sariling thread, click mo lang ang new topic

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Re: Troubleshooting Guidelines

Post by noyzky7 on Sat Dec 21, 2013 5:45 pm

thanks master..

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Re: Troubleshooting Guidelines

Post by kaholito on Sun Dec 22, 2013 10:32 am

Ano po ang trabaho ng FBP?bakit po ung Ibang fly back wla into.ito po ba na buhay sa hv.

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Re: Troubleshooting Guidelines

Post by Hertz on Sat Dec 28, 2013 3:09 pm

may sagot si sir ultra niyan dito - FBP

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Re: Troubleshooting Guidelines

Post by ultrasonic™ on Wed Feb 19, 2014 7:16 pm

slmat sa mga sagot hertz.. btw,... tagal ko di nabisita ang thread nato... sori

on topic: post ko na rin to dito.. bka makatulong sa iba...
for some tv na mahina na ang heater filament ng picstube nila. pwde natin e boost ang heater supply by making another external supply/additonal winding..

bubod lng ng wire sa ferrite bar ng flyback
like this one



at yan na ang ipalit sa dating heater supply ng tv...
dont forget lng na edisable ung dating tapping nya
npaka applicable nito sa mga Sony Trinitron, surplus na Samsung at Goldstar

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Re: Troubleshooting Guidelines

Post by james on Tue Feb 25, 2014 12:09 pm

Dagdag pa sir admin.

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Re: Troubleshooting Guidelines

Post by kaholito on Tue Mar 04, 2014 3:38 pm

ano po ba mga pyesa bumubuo sa abl circuit?ano po voltage reading ng normal na abl circuit.ano din po nangyayari sa tv pag may sira ang abl.

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Re: Troubleshooting Guidelines

Post by Hertz on Tue Mar 04, 2014 5:06 pm

maliit lang ang masusukat mo sa ABL. nasa 2v below iyan at still nag ba vary, depende na rin sa level ng light beam . binubuo iyan ng iilang resistor at capacitor na nagsisilbi namang tagahatig ng mensahe sa Chroma kong ano dapat, ang tama niyang ibigay na brightness level. pag isa sa kanila ang may problema. tiyak madilim ang video appearance niya

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Re: Troubleshooting Guidelines

Post by kaholito on Tue Mar 04, 2014 10:35 pm

2v sa flyback pin po ba un ac or dc?

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Re: Troubleshooting Guidelines

Post by Hertz on Wed Mar 12, 2014 6:57 pm

kung sa pin mismo. dc

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how to know when a flyback is damage & needed to be replace?

Post by DJFEL on Thu Mar 13, 2014 1:06 pm



how to know when a flyback is damage and needed to be replace?

1 fbt is composed of 2 winding primary - ( B+, COL, 180V ) & secondary -(GND,HT,24v,12V).
For example 1 pin in primary shorted to secondary pin it means fbt is need to replace.
ABL pin also has no resistance in primary & secondary windings. Used multitester to measure the resistance.

2 Always blows h out, shorted ground and b+,180vdc boost up, weak contrast, no radiation outpit in crtube,
weak output of electric energy going to anode cup tube using conductor metals, leakage, overheating,,, hissing....
abnormal color output, abnormal fucos and screen.

3 If flyback is the culprit the unit cant turn on only standby power u can remove the flyback and the power should turn up .
anyway most of the tv today has self diagnostic feature ie the power led blinks several times depending on the defects for example three blinks means u had shorted b+ rails for your tv if the power led blinks count it and search the net for possible cause

share ko lang...

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Re: Troubleshooting Guidelines

Post by DJFEL on Thu Mar 13, 2014 1:07 pm

na polot ko lang to sa FB..

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Re: Troubleshooting Guidelines

Post by ultrasonic™ on Fri Mar 28, 2014 12:29 pm

+1 mkapulot aral din...

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Re: Troubleshooting Guidelines

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