Question about Hitachi 60SBX78B 60" Rear Projection Television

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Hatachi 60 inch big screen test port e994 open high voltage shutedown

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You can get the parts from www.TvRepairKits.com. They have put together a kit that includes the parts and instructions to fix the following models (50UX58B, 60UX58B, 50UX58K, 60UX58K, 50SBX78B or 60SBX78B). The kit includes the E994 pico fuse and the C707 capacitor.

Posted on Nov 02, 2008

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1 Answer

I have a 43" hatachi


First replace STKs and if problem still there, check supply voltage of STKs.
Let me know the results to provide you more help.

Oct 27, 2008 | Televison & Video

1 Answer

Hatachi 60sbx78b 60 in. rear projection. Won't power up


set is in shutdown--some of these sets have problems with Glycol leaking out of one of the picture tubes---look and carefully check the first few inches from the front of the circuit boards--it will be a clear liquid or look like model airplane glue--it shorts things out--if you see the liquid do not touch it---it is like anti-freeze but much more concentrated and toxic---each picture tube has a sealed area full of the coolant--if it is Glycol---forget about it and get another set----this set is also prone to the High Voltage Transformer going bad---unsolder it and the Horz output transistor and see what happens.

good luck, Steve

Aug 09, 2009 | Hitachi 60SBX78B 60" Rear Projection...

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Hello, please check Q710 in high voltage circuit. If you need more info please advice. Arpi

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1 Answer

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replace pico fuse E994 and capacitor C707. You have to disconect alot of wires and remove the screws holding the boards. you DON'T have to remove the large high voltage wires. You have to stand the board on it"s edge to unsolder the components from the back side of board. Good luck it worked fine for me. fcs0998@aol.com gene

Apr 27, 2009 | Hitachi 60SBX78B 60" Rear Projection...

1 Answer

I have a magavox big screen


Hello cce357,

This can be any number of things, here is a possible listing:

1) No High Voltage (check the IHVT or the trippler)

2) CRT filament transformer winding open (check the windings that supply voltage to the CRT filaments)

3) Video / CRT socket boards bad (highly unlikely but check anyway)

4) High Voltage power supply malfunctioning (related to problem #1)

This listing is a good starting point. I would suggest that you purchase a schematic to aid in testing the voltages mentioned in the 4 steps above. If you have a background in electronics then do the above, if not please ask a qualified TV technician to perform these steps.

Thank you,

I hope this helps,

Shuttle83
http://www.electron-age-technologies-llc.com

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1 Answer

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Check C702 near flyback xformer--if shorted, relace w/3KV cap.Example==102K/2KV replace with 102K/3KV SONY # 1-161-754-00.

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2 Answers

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Check and see if lights on board in back of set, if non then look for fuses in power supply.

Sep 14, 2007 | Televison & Video

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