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Crumbtrail TV Forums: TV Equipment: TV Repair Forum:
FSP194-3F01 Power Supply for Protron/Spectroniq PLTV-3250

 
 


dbell
New User

Apr 3, 2015, 10:21 PM

Post #1 of 5 (1367 views)
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FSP194-3F01 Power Supply for Protron/Spectroniq PLTV-3250 Can't Post
Simple answer probably but proven difficult to find. On this FSP194-3F01 power supply the secondary 5v pins at CNS1 show 5Vs GND and 0/F. What is 0/F ?

http://s1381.photobucket.com/user/dbe11/media/Power%20Supply%205v%20Connector%20Pins_zpsofxnshde.jpg.html


(This post was edited by dbell on Apr 4, 2015, 11:14 PM)



jts1957
Veteran


Apr 4, 2015, 1:03 AM

Post #2 of 5 (1360 views)
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Re: [dbell] FSP194-3F01 Power Supply for Protron/Spectroniq PLTV-3250 [In reply to] Can't Post
ON/OFF?


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dbell
New User

Apr 4, 2015, 11:18 PM

Post #3 of 5 (1354 views)
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Re: [jts1957] FSP194-3F01 Power Supply for Protron/Spectroniq PLTV-3250 [In reply to] Can't Post
It runs over to the main board but no label there. I was thinking it might be the voltage to turn on the 16v and 24v side. I have 4.3vdc on the 5v pins and No voltage present on 0/F


jts1957
Veteran


Apr 5, 2015, 2:34 AM

Post #4 of 5 (1351 views)
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Re: [dbell] FSP194-3F01 Power Supply for Protron/Spectroniq PLTV-3250 [In reply to] Can't Post
Power supply provides Main board with standby voltage. Main board (microprocessor) receives inputs from the front panel buttons and the remote sensor. When a command to turn on
(from either) is processed, Main board then sends power supply a turn on voltage.

Monitor that pin's DC voltage from the time you plug the set in until you press 'power.' If it never changes (and you HAVE standby voltage), Main is likely bad.


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Location: Far, Far Away


dbell
New User

Apr 9, 2015, 5:27 PM

Post #5 of 5 (1315 views)
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Re: [jts1957] FSP194-3F01 Power Supply for Protron/Spectroniq PLTV-3250 [In reply to] Can't Post
Summary: I originally had no out put voltage at 5v secondary. Replaced failing caps and after replacing Q7 with an NPN 2N2222 my voltage came up at 5v pin but was fluctuating and dropped off almost a volt with the load attached. Removed Zener ZD4 from the circuit and 5v became solid and TV became operational. Smile

 
 
 


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