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TNY264 - What do the other ID numbers mean please?

grahal

Nov 23, 2019
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Nov 23, 2019
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Hello
I am considering replacing a TNY 264 on a pcb out of a Bosch dishwasher.

These numbers shown on the device ... 1145 tny264gn oc 914b

What do the numbers 1145 and oc914b mean?

When I look on the Farnell website I can see TNY264 only ... do I need to be concerned about any other ID numbers in order to source a direct replacement part?

Thank You
PS
I know about ... 'what might have blown the TNY264 etc' but as they are only £3 ish delivered I thought I'd bang a new one in and if that doesn't fix it then unless I see anything obvious I would buy a new dishwasher.
 
Last edited:

bertus

Moderator
Nov 8, 2019
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Hello,

The TNY264 seems to be a controller for a small switched mode power supply.
The G behind the number stands for the SMD casing.

Bertus
 

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73's de Edd

Aug 21, 2015
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Sir grahal . . . . .


If you haven't already viewed and actually examined the unit and you have a dead unit with no display or other action, that is a very good possibility.
And even BETTER if someone was around in the area and heard a ! POP !.

Here is an application note for the unit and if you dont have an exact visual of the case of the unit having a pinhole in it or the top blown off by its internal Power FET exploding. Also check for the RF1 fusible resistor being open or burnt cased.
Just after confirming all of your D1-2-3-4 diodes are not being shorted , and that C1 filter capacitor has not gone "lazy" on you ;
some applicable secondary fault parts considerations would be all of the PINK cased components, if you don't find output voltage at the C5 C6 caps with the unit powered up.

APPLICATION NOTE . . . . .

upload_2019-11-23_19-33-1.png


MASSIVE FAILURE au . . . . . . a now, very T( i )NY264

TqtKiuQ.jpg



Thaaaaassssssssit . . . . .


73's de Edd . . . . .



Ever stop to think . . . . . and then forget to start again ?



.
 
Last edited:

grahal

Nov 23, 2019
2
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Nov 23, 2019
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Thank You Guys, each one for your very helpful replies.

Yeah the leg at the red arrowhead has blown off altogether! :)

It's my daughters dishwasher and I was hoping the fix wouldn't turn into a big job / a mission!? :(

Clearly something heavy current-wise has blown the leg off?

What is there in a dishy ... heater? motor turning the water jet thingy? motor doing the emptying?

Any comments or ideas welcomed and much appreciated!

Thank You
 

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