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Gemini p-07 amp board fault

Ihave a gemini p-07 amp which has blown a cap on the board id no c17 as it has destroyed its self i was wondering if you would know what its value is in pf and its purpose and if pos the reason for its failing

Posted by steve emsley on

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1 Answer

Anonymous

Its better to get the schematic diagram or a similar one to be sure, but the reason for a blow up may have to do with a s/c along the line.

Posted on Jun 01, 2007

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TV has black screen and Flashlight test fails. I hear a loud beep when power button is long pressed. Power supply to LED strips conn, 1-5 have ~176V but 2-4 have 0V. What might be the issue?

Check and replace its T'Con board. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
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Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/lisa_52daba487e5b4d53

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A friend owns a Mirage LF 150 subwoofer a few years now. Someone had left the volume setting very high on the preamplifier and turned if off. When the preamp was turned on, there was a loud...

You would have blown the fuse. There was a reason why the fuse had blown the first time. Being that this unit is self powered. I would look into the power supply board and look for blown caps. Hopefully you didn't burn the board. Most times a problem like this is a bad Capacitor. Look for blown Capacitors on the board. They will Look like little soda cans. They would be buldging on the top of the cap and possibly leaking yellow or white if bad. Capacitors should be FLAT not having buldge at all. Replace Caps with exact uf EXACT on the Volts you can go over what is printed on the bad Capacitor but never go under. Caps can hold a wallop of a shock and possibly kill you. So either you or a pro discharge the caps. They can hold a punch and knock you on your but. Even unplugged. So Discharge them and proceed.
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Er 07

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It just turned off by it self and it wont turn on

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My hotpoint wf340 lights are flashing (all of them).

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Re: Onkyo DV-CP500 DVD player stuck in standby mode (by 7 users)

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Fuses for P-07

the fuse you need is a t4al 250v

this is a common slow blow 250v 4amp fuse.

You can get them at RadioShack



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Mike,
The ICZ designations on that board are two Sanyo STK392-040 amps used for convergence. Rz142 through Rz145 are the yoke return circuit are 3.9 ohm 1/2w resistors. CZ140 and 141 are two electrolytic radial 22mf/50v caps in the feed circuit for those amps.
My question would be - and I've NEVER seen this, in my 30 years in electronics, what caused such a domino failure? The amps are basically LV fed by a +/- 24v line input. If the yoke(s) were to short shouldn't cause enough feedback to destroy the convergence board in the manner you've indicated here. That's a P58A chassis used in several models of the Samsung and Akai designs. Only trouble I've heard of with those boards are cooling and most techs have taken to installing cooling fans directly on the board, driven by the +/- 20v line. That drops the temp several degrees and allows the amps to operate at a much cooler temp. We rebuild those boards here on a daily basis and add the mods for greater reliability. But other than that the P58A is considered a bullet proof chassis.
Hope this helps!
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993
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