Testing Tv board without Tube

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Testing Tv board without Tube

Post by alvinquimbo on Sun May 11, 2014 5:56 pm

Mga master tanong ko lang? Pwede magtest ng board kahit walang tube?ibig kong sabihin kunwari deadset tapos nirepair mu na dala lang ang board tapos ng matapos ay try mung paandarin ng walang board,ok lang po ba yun?salamat for any reply..

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Re: Testing Tv board without Tube

Post by Electro on Mon May 12, 2014 10:58 am

pwede na siya master. i check lang ang b+ og oscillation niya

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Re: Testing Tv board without Tube

Post by ultrasonic™ on Tue May 13, 2014 2:24 pm

yapz pwde yan vin.. kong NO B+ ang status/scenario... pwde nimo e condemn ng sadya ang horizontal section para di mag oscillate at maging safe kau while on going pa ang troubleshooting nyu.. e-hang lng ang collector pin ng h-out or B+ pin ng flyback... malalaman mo lng na ok na ang unit pg lumabas na ang B+... sa chassis ground ka pa rin magga-ground.. then tutukan ang + terminal ng secondary ecaps... resolder nlng ang pin pag ok na..


kong ganito nmn ang scenario may B+ ka mataas man o bagsak pero wala kaung oscillation. pwde mo pa rin matroubleshoot yan w/out tube..

needed mo lang e keep safe ang anode cap look like this one:



lagay ka ng pampabigat sa HV wire para di magalawgalaw...
then lagay ka nmn ng metallic material sa terminal ng anode cap... needed mong maglagay ng kunting gap... para mapapatalon dun ang HV (high voltage) bluish color... now pag nakita mo na na may bluish light jan ay visual indication yan na nag ooscillate na ang unit...
pero take note: merong mga unit na nagpoprotect pag walang YOke... kaya aware ka dapat jan.. 2 options nmn ang pgpipilian mo jan.. bubulagin mo ang protection ckt o gamit ka nlng ng dummy load or ibang yoke... sa ibang mga model nmn like philips at sony my potect din ang IK nila at white balance for monitoring kng normal ba ang behavior ng rgb... pero wag nlng muna Cguro tau tumuon jan... lets learn nlng abwt basic..

now kng on protect or hold-down nmn ang unit.. saglit lng nag ooscillate... ay di mo makikita ang pagtalon ng HV pwede mong tutukan ang screen para un ang primary monitoring mo kong nag oscillate nga ba kahit saglit lng....

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Re: Testing Tv board without Tube

Post by alvinquimbo on Tue May 13, 2014 10:07 pm

salamat dex for info,atleast pwede ako makarepair or madala kahit board lang basta deadset..salamat na marami..

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Re: Testing Tv board without Tube

Post by Hertz on Thu May 15, 2014 12:55 pm

may disadvantage din ang ganyan. kung magkaroon man ng B+. hindi pa natin masasabi na ok na ang inaayos natin. dahil hindi mo pa nakikita ang display niya. maaaring overcolor, vertical, rolling, blurred at marami pang iba ang pwedeng kasunod.

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Re: Testing Tv board without Tube

Post by ultrasonic™ on Thu May 15, 2014 5:50 pm

^ agreed... pero No choice nmn xa sis hertz.. except kng my CRT/picstube xa na pang test... for me ok na rin na wala... the important thing lng naman ay mapa improve mo ang status ng unit... para makausad  ^_^

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Re: Testing Tv board without Tube

Post by Oscar on Wed May 21, 2014 6:18 pm

+1 po sa inyo. pwede pala ang ganyan master. ang alam ko lang gumamit ng ibang picture tube.
itama ang pin kong mali.

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Re: Testing Tv board without Tube

Post by alvinquimbo on Wed May 21, 2014 8:54 pm

@oscar..by d way oscar share ko lang,uu pwede yun kasi minsan si master ultra pagnakita ko ay board lang ang dinadala pag deadset ang unit kaya napatanong ako ulit ako sa kanya kasi may tinotrouble ako na deadset abg probs kaso lang malaki ang tv at mahirap dalahin..yun lang hope can help..

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Re: Testing Tv board without Tube

Post by Hertz on Thu May 22, 2014 4:12 pm

ultrasonic™ wrote:^ agreed... pero No choice nmn xa sis hertz.. except kng my CRT/picstube xa na pang test... for me ok na rin na wala... the important thing lng naman ay mapa improve mo ang status ng unit... para makausad  ^_^

sige na nga Sir. hindi nako makikipagtalo.   worship   payo ko lang sa lahat. safety first

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Re: Testing Tv board without Tube

Post by ultrasonic™ on Fri May 23, 2014 2:32 pm

^ jajajaja  ^_^  tama always safety first

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Re: Testing Tv board without Tube

Post by james on Sun May 25, 2014 12:01 am

Pwede pala ang ganun? Hindi naman kaya meron ibang pumutok?

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Re: Testing Tv board without Tube

Post by Hertz on Mon May 26, 2014 7:59 pm

wala naman siguro.

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Re: Testing Tv board without Tube

Post by Calibrator on Thu Jun 19, 2014 1:11 pm

Sabi nga, it depends.

Me mga troubles na pwedeng alisin muna ang board gaya ng ginagawa ko kapag power supply ang sira.

Basta alam mo kung pa'no mo mapapagana yung power supply, kasi minsan, nag-didisabled din ang power supply kapag me mga kulang na nakakabit (nag-po protect).

In cases na vertical problem, kulay o distorted picture o di makasagap ng channel, kelangan talaga na nakakabit picture tube.

Although, uubra talaga na gumawa ng wala yung mismong picture tube nya, pwedeng ibang picture tube pero dapat expert ka na kung pa'no mo eto i-m-modify.

Yoke and picture tube kasi po-problemahin mo once you pulled out sa bahay ng customer yung board lang, except pagaganahin mo muna power supply.

As conclusion, kapag dead set o no power lang applicable ang gusto mong mangyari

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Re: Testing Tv board without Tube

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